Answer:
Rats could control the termination of the shocks.
Explanation:
From the experiment carried out by Dr. Weiss, he discovered that rats with high predictability of shock had far fewer ulcers that those who could not control the shocks. Dr. Weiss suggests that this knowledge can be applied to human beings in the fight against ulcers.
Imagine you are performing a cross involving seed color in garden pea plants. What F1 offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.
A. 100 percent yellow-green seeds
B. 100 percent yellow seeds
C. 50 percent yellow, 50 percent green seeds
D. 25 percent green, 75 percent yellow seeds
Answer:
B. 100 percent yellow seeds
Explanation:
When a gene has two alleles and one allele is dominant over the other, the dominant allele is expressed in the heterozygous state and the expression of the recessive allele is masked. According to the given information, the allele for yellow seed color is dominant over the allele for the green seed color.
Let's assume that the allele "Y" gives yellow color to the seeds while the allele "y" is responsible for green seed color. A cross between two pure breeding yellow seeded (YY) and green seeded (yy) plants would produce all the yellow seeded progeny with genotype "Yy".
YY (Yellow) x yy (green) = Yy (yellow)
Final answer:
When crossing true-breeding parents with green and yellow seeds, the F1 offspring would be 100 percent yellow phenotype.
Explanation:
When crossing true-breeding parents with green and yellow seeds, where yellow is dominant, the F1 offspring would be heterozygous for seed color, resulting in a 100 percent yellow phenotype. This means that all F1 offspring would have yellow seeds, even though one parent has green seeds.
As a first step in the proposal, the investigator(Wouldbe Fiancé) needs to make many copies of DNA of known sequence. How would they do that? A)Carry out DNA cloning of the desired sequence into a plasmid vector and then put that into bacteria and wait for the bacteria to copy the gene every time the cells divide. B)Wait for helicase to unzip the genes. C)Make a long sequence of adenines so they could get paired with U. D)Alterthe reading frame of the mRNA.
Answer:
The correct option is A) Carry out DNA cloning of the desired sequence into a plasmid vector and then put that into bacteria and wait for the bacteria to copy the gene every time the cells divide.
Explanation:
The DNA can be easily cloned by the help of vectors like plasmids. Plasmids can be described as an extra-chromosomal ring which is present in bacteria. The plasmid has many multiple cloning sites where the desired DNA can be incorporated. the plasmid with the foreign DNA is then incorporated back into a bacterial cell. As bacterial cells like E.coli divide in a short period of time, many copied of our DNA could be obtained whenever the bacterial cell replicates.
Which statement made by the patient indicates to the nurse that understanding about discharge instructions on antihyperlipidemic medications has occurred?
a. "Antihyperlipidemic medications will replace the other interventions I have been doing to try to decrease my cholesterol."
b. "It is important to double my dose if I miss one in order to maintain therapeutic blood levels."
c. "I will stop taking the medication if it causes nausea and vomiting."
d. "I will continue my exercise program to help increase my high-density lipoprotein serum levels."
Answer:
The correct answer is d i will continue my exercise programme to help increase my high density lipoprotein serum levels.
Explanation:
Antihyperlipidemic drug is pescribed to patient suffering from high plasma cholesterol.High plasma cholesterol level is much dangerous for our body because it can leads to the development of coronary artery disease.
When discharge instruction on hyperlipidemic medication is given to a patient at that time patient is informed to continue his/her exercise program me to maintain a high level of good cholesterol also known as high density lipoprotein.
Which of the following researchers are correctly matched with their work?
A.Erwin Chargaff --- Demonstrated the assimilation of external DNA into a cell; mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form
B.Alfred Hershey and Martha Chase ---- Showed that the DNA, but not the protein, entered the bacterial cells, and was therefore concluded to be the genetic materialE.James Watson and Fredrick Crick --- Determined the structure of DNA, an elegant double-helical model
C.Frederick Griffith --- X-ray diffraction of crystallized DNA, suggested helical structure and diameter
D.Rosalind Franklin --- Analysis of the relative base composition of DNA
Answer:
The answer is letter B
Explanation:
B.Alfred Hershey and Martha Chase ---- Showed that the DNA, but not the protein, entered the bacterial cells, and was therefore concluded to be the genetic materialE.James Watson and Fredrick Crick --- Determined the structure of DNA, an elegant double-helical model
Rosalin Franklin - Xray diffraction of crystallized DNA, that is why letter C is incorrect.
Frederic Griffith- Demonstrated the assimilation of external DNA into a cell; mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form, that is why letters A and C are incorrect.
where does translation take place in the cell
Answer:
cytoplasm that is where the translation take place
Final answer:
Translation, the process of protein synthesis, occurs in the cytoplasm of cells where ribosomes are located. In eukaryotic cells, this process is separated from transcription by the nuclear membrane, requiring mRNA transport from the nucleus to the cytoplasm.
Explanation:
In eukaryotic cells, translation is the process by which ribosomes synthesize proteins using the genetic information carried by messenger RNA (mRNA). This process takes place in the cytoplasm of the cell, where ribosomes are found. After RNA transcription occurs in the nucleus, the mRNA is transported to the cytoplasm. Translation involves reading the genetic code on the mRNA to produce a specific sequence of amino acids, thus forming a protein.
It is important to note that in prokaryotic cells, translation can begin before transcription has finished because both processes occur in the cytoplasm. However, in eukaryotic cells, the nuclear membrane physically separates the transcription process in the nucleus from the translation process in the cytoplasm. Therefore, translation in eukaryotic cells can only begin after the mRNA has been fully processed and transported out of the nucleus to the cytoplasmic ribosomes.
Which of the following is true?
a) Sensory and motor tracts within the spinal cord are separated into sensory tracts
b) on the right and motor tracts on the left side of the spinal cord have names that indicate the location of the initiation and termination of the nerve impulses
c) they conduct are located in the gray matter
d) all of these choices are correct
Answer:
hi ok ok
Explanation:
ok ok hi
A natural predator of the crown-of-thorns sea star is a mollusc called the Giant Triton, Charonia tritonis. If the triton uses a radula to saw into the sea star, then to which clade should the triton belong?
A) chitons
B) bivalves
C) gastropods
D) cephalopods
Answer:
C) Gastropods
Explanation:
Radula is the scraping and feeding organ of Gastropods.Since giant triton uses a radula to saw into the sea star, it is obviously a Gastropod.Charonia tritonis or giant triton are large sea snail.They belong to class Gastropoda under phylum mollusca..These are natural predators of starfish and other small molluscs.Like other molluscs these are also soft bodied animals and have large shells.How do lichens contribute to primary succession? Lichens begin to break down rock to form soil. Lichens decompose organic matter from animals and plants. Lichens are nitrogen-fixing bacteria. Lichens convert carbohydrates into fossil fuels.
Lichens contribute to primary succession by breaking down rocks, forming soil, and adding organic material. They are a mutualistic association between a fungus and a photosynthetic partner, with each partner providing necessary components for survival and growth. Some cyanobacteria in lichens additionally fix nitrogen.
Explanation:Lichens contribute to primary succession by colonizing rock surfaces in otherwise lifeless environments, breaking down rocks to form soil, and adding organic material to further contribute to soil formation. Lichens are a mutualistic association between a fungus and a photosynthetic partner, such as an alga or a cyanobacterium. The fungus supplies minerals and protection, while the photosynthetic partner provides carbon and energy. Some cyanobacteria in lichens also fix nitrogen from the atmosphere, contributing nitrogenous compounds to the association.
Learn more about Lichens contribute to primary succession here:https://brainly.com/question/31852738
#SPJ11
Lichens are pivotal in primary succession, colonizing barren rock surfaces and initiating soil formation through the breakdown of rock and nitrogen fixation.
Lichens contribute to primary succession by acting as pioneer species that colonize lifeless rock surfaces, such as those left after glacial recession or volcanic activity. Through a symbiotic relationship between a fungus and either an alga or a cyanobacterium, lichens are formidable survivors that can thrive without soil. They produce acids that help break down rocks to form the first layers of soil. Moreover, certain types of lichens are capable of nitrogen fixation, which adds essential nutrients to the forming soil, supporting future growth of plant life.
Bees can see colors we cannot see, and they can detect minute amounts of chemicals we cannot sense. Unlike many insects, bees cannot hear very well. A biologist would probably give which of the following as the ultimate explanation for their poor hearing?a.) If a bee could hear, its highly programmed brain would be overwhelmed with information.b.) If bees could hear, the noise of the hive would be overstimulating.c.) This is an example of altruism.d.) Bees are too small to have functional ears.e.) Hearing may not contribute much to a bee's reproductive success.
Answer: The answer would likely be E.
Explanation:
The biologist would likely explain this concept from the viewpoint of evolution. As hearing does not contribute to the bee's reproductive success, enhanced hearing traits in bees were not selected for and hence bees' hearing ability was not an adaptation that enhanced its reproductive success and bees cannot hear very well.
In the Ap axial projection (Towne method) of the skull, with the CR directed 30 degrees caudad to the orbitomeatal line (OML) and passing midway between the external auditory meati, which of the following is best demonstrated?
A) Occipital bone
B) Frontal bone
C) Facial bone
D) Basal formina
Answer:
A) Occipital bone
Explanation:
Based on the scenario being described it can be said that the structure best demonstrated would be the occipital bone. This is a bone that forms in the base of the skull towards the back and around the spinal cord. Since the AP axial position projects the anterior structures downward, then it would allow for the occipital bone to be easily viewed without special equipment.
Movement of the chromosomes during anaphase would be most affected by a drug that prevents mitosis and cell division. What is this drug?
Answer:
Colchicine
Explanation:
Colchicine is an alkaloid derived from the autumn crocus (Colchicum autumnale).
The effect of colchicine, which inhibits microtubule polymerization and thus assembly of the mitotic spindle, demonstrates the presence of another checkpoint in the cell cycle. When colchicine is added to cultured cells, the cells enter mitosis and arrest with condensed chromosomes. With increasing time, a large fraction of the cells in a culture become arrested, thus permitting determination of the size, shape, and number of mitotic chromosomes — that is, the karyotype — in multiple cells. A checkpoint control somehow senses when the mitotic spindle has not assembled properly and prevents activation of the APC polyubiquitination system that normally leads to degradation of the anaphase inhibitor, required for onset of anaphase, and later to the degradation of mitotic cyclins, required for the exit from mitosis. As a result, MPF activity remains high, chromosomes remain condensed, and the nuclear envelope does not re-form.
In the case of Darwin's finches, an ancestral finch species from the mainland arrived on the Galápagos Islands and soon developed into many new species via adaptive radiation. The finches did NOT undergo adaptive radiation back on the mainland. What is the most plausible biological explanation?
Answer:
competition for food and survival on the mainland provided stabilizing selection.
Explanation:
Based on the information provided within the question it seems that the most plausible biological explanation is that the amount of competition for food and survival on the mainland provided stabilizing selection. This was most likely not seen in the islands from which they came and therefore provided the ideal conditions in order for the Finches to diversify rapidly into a multitude of new forms,
Which example describes biological evolution?
a.Over time, a caterpillar species becomes as green as the leaves it eats.
b.The average woman's dress size has increased over the last 50 years.
c.You are vaccinated against polio and are protected against the disease.
d.A tree branch is broken off and another grows in its place.
Answer:
a.Over time, a caterpillar species becomes as green as the leaves it eats.
Explanation:
Evolution means the gradual formation of complex organisms from simple types, a process that usually take several years (geological time).
The gradual change happens as a result of continuous adaptation by organisms to ever changing environment.
Option b could have been considered along with option a, but evolution process takes much more than 50 years.
Hence, the correct option is a.
Vectors such as pUC18 and others of the pUC series contain a large number of restriction enzyme sites clustered in one region. Which term describes this advantageous arrangement of restriction sites?
Answer:
multiple cloning site
Explanation:
Based on the information provided within the question it can be said that the term being described is a multiple cloning site or MCS for short. Like mentioned in the question this refers to a region of DNA located inside a Plasmid, which holds various Restriction enzyme sites clustered in one reagion, each of which are unique.
What are the structures of the brain that increase surface area called?
Answer:
gyri (ridges) and sulci (furrows)
Explanation:
Gyri are ridges, Sulci are grooves. Sulci encircle each gyrus, increasing the cerebral cortex's surface area and dividing the brain. By expanding brain size, more neurons can fit in the cortex, boosting its processing power.
What are gyri an sulci?Gyri is the name given to the ridges, and Sulci is the name given to the grooves. Each gyrus has sulci surrounding it, and these sulci work together with the gyri to increase the surface area of the cerebral cortex and produce divisions in the brain. Increasing the surface area of the brain allows for a greater number of neurons to be packed into the cortex, which in turn increases the processing power of the cortex.
The folding of the cortex, the region of our brain that is responsible for higher cognitive processes including memory, language, and consciousness, results in these morphological traits.
Learn more about gyri and sulci, here:
https://brainly.com/question/4201919
#SPJ5
Which of the following methods is the most effective in determining muscular strength if you do not want to worry about selecting the wrong weight?A. maxing outB. absolute methodC. predicting 1 RMD. calisthenic method
Answer:
The correct answer is C. predicting 1 RM.
Explanation:
The RM or Repetition Maximum is a test to know how many times can someone lift the same weight. This way, there's no risk of lifting an excess of weight, and it's also a good way to measure how strong a muscle is.
Answer:
C
Explanation:
on edg
You are a scientist who notices great similarity between the spines of a hedgehog and the spines of a porcupine. When you study their genetics, however, you notice that the set of genes that code for hedgehog spines is a different set of genes than the set that codes for porcupine spines. You decide this must be an example of:
a. convergent evolution
b. divergent evolution
c. coalescent evolution
d. unifying evolution
Answer:
Divergent evolution
Explanation:
The reason it is divergent is because they came from the same animal before their evolution took separate ways.
Which of the following animals indicated in the Antarctica Food Web folder utilizes the Crabeater Seal as a source of food? a. Humpback Whale b. Sharks c. Krill d. Leopard Seal e. Squid
The animal that uses the Crabeater Seal as a food source in the Antarctica Food Web is the Leopard Seal. Humpback whales, sharks, krill, and squid do not feed on crabeater seals. As for the effects of melting sea ice in Alaska, polar bears would be the most affected.
The correct answer to the question of which animal in the Antarctica Food Web utilizes the Crabeater Seal as a source of food is d. Leopard Seal. Leopard seals are top predators in the Antarctic ecosystem, known to prey on other marine mammals, including the crabeater seal. This information helps us understand the dynamics of Antarctic food webs and the importance of each species in maintaining ecological balance.
Humpback whales primarily feed on krill and small fish, not on crabeater seals.
Sharks are not typically part of the Antarctic food web where crabeater seals live.
Krill are a primary food source for many animals, but they do not consume crabeater seals.
Squid also do not feed on crabeater seals, as they have different dietary preferences.
Concerning the Arctic food web and the impact of sea ice melting in Alaska, polar bears would be most affected (option b) because they rely on sea ice to hunt for seals, their primary food source.
Sometimes drugs, such as phenobarbital, are given in a higher dose as a loading dose and then tapered back to a maintenance dose. This helps the drug to accumulate to a therapeutic level in the body until the concentration plateaus. When this occurs, the drug has reached which of the following?
a.Nadir
b.Steady state
c.Half-life
d.Bioavailability
Answer:
b.Steady state
Explanation:
When a drug is in a steady state is usually defined as the time during which the drug remains stable when administered repeatedly or continuously (IV infusion) - this is the state where the rate of the drug entering the systemic circulation or drug administration equals to its rate of elimination out of the system. In the case where a drug is administered multiple times in fixed intervals the plasma concentration increases till it plateaus. This administration pattern will result in a steady-state concentration which is intended to be within the therapeutic window
According to the "wobble hypothesis," what is the identity of the tRNA that can recognize the following codons: CAU, CAC, and CAA? According to the "wobble hypothesis," what is the identity of the tRNA that can recognize the following codons: CAU, CAC, and CAA? 3'-IUG-5' 3'-GTI-5' 3'-GUI-5' 3'-III-5'
Explanation:
The wobble hypothesis states that the first two bases within a codon for an amino acid have an exact pairing with anticodons of tRNA. However, the pairing of the third bases may vary or wobble- thus a tRNA can recognise multiple codons.
3'-GUI-5' can recognise CAU, CAC, and CAA
wobbling occurs at the 5' end I represents the wobble anticodonpurines pair up with pyrimidines in base pairsFurther Explanation:
The nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They differ from other macromolecules since they don’t provide the body with energy. They exist solely to encode and protein synthesis.
Basic makeup: C, H, O, P; they contain phosphate group 5 carbon sugar does nitrogen bases which may contain single to double bond ring.
Codons are three nucleotide bases encoding coding and amino acid or signal at the beginning or end of protein synthesis.
RNA codons determine certain amino acids so the order in which the bases occur within in the codon sequence designates which amino acid is to be made bus with the four RNA nucleotides (Adenine, Cysteine and Uracil) Up to 64 codons (with 3 as stop codons) determine amino acid synthesis. The stop codons ( UAG UGA UAA) terminate amino acid/ protein synthesis while the start codon AUG begins protein synthesis.
Learn more about transcription at https://brainly.com/question/11339456
Learn more about DNA and RNA https://brainly.com/question/2416343?source=aid8411316
#LearnWithBrainly
According to the acid-growth hypothesis, auxin causes increased acidity in cell walls, which then activates ____ that disrupt(s) bonds between cellulose microfibrils, allowing cell expansion
Answer:
proteins called expansins
Explanation:
The complete question is :
According to the acid-growth hypothesis, auxin causes increased acidity in cell walls, which then activates ____ that disrupt(s) bonds between cellulose microfibrils, allowing cell expansion.
a. a membrane potential
b. an mRNA
c. AUX1 transporters
d. K+ ions
e. proteins called expansins
The acid growth hypothesis explains the growth of cells and organs in the plants. According to this hypothesis, the plant hormone auxin causes induction of the H+ proton extrusion into the apoplast which leads to the activation of expansin which a pH-sensitive protein.Expansin is responsible for wall stretching and relaxation and causes hydrolysis of hydrogen bonds and thus helps in cell expansion.
Biologists often determine population density by capturing animals and marking them for later identification upon recapture. A biologist wants to use this method for a population census of desert mice. This will work if the _____.
A) mice are recaptured in the same location using the same trapping methods
B) mice deliberately return because the traps contain food
C) biologist waits a long time before resampling the population
D) mice are territorial
Answer:
I think the answer is A
Explanation:
Since the question states that they want to determine the population of the desert mice. You get the direct answer from just using context clues. Since population means one species in a certain area, it means that this method will work if the mice stay in the same area.
ADH secretion can be stimulated by either blood osmolarity changes or blood pressure changes in the heart or large vessels. ADH secretion can be stimulated by either blood osmolarity changes or blood pressure changes in the heart or large vessels. True False
Answer:
True
Explanation:
The ADH is related to the liquid pressure indide the body, it controls the pressure of it in order to mantain a perfect body homeostasis. In consequence, everytime there is a blood osmolarity change, a blood pressure change in the heart or large vessels it is secretated because these parts of the organisms contain most of the liquids of the body.
An estuary collects sediments from the ocean and rivers that feed into it. The sediments swirl around and then settle to form a mudflat. Eel grass is then established on the mudflat. The ecosystem changes over time and ultimately develops into a salt marsh that contains mangrove trees.
Which of the following is likely NOT involved in this example of ecological succession?
A)
The rotting remains of plants add to the fertility of the soil.
B)
The soil becomes so fertile that eel grass is replaced by other plant species.
C)
The roots from plants help stabilize the sediment, keeping it in place.
D)
The concentration of salt becomes so high that all plant life is destroyed.
Answer:
Explanation: d
NOT involved in this example of ecological succession where the salt concentration becomes so high that all plant life is destroyed.
What is the definition of an estuary?Estuaries are semi-enclosed coastal bodies of water that have a free connection with the sea and in which seawater is measurably diluted with fresh water from land drainage.
With this information, we can conclude that you are NOT involved in this example of ecological succession where the concentration of salt becomes so high that all plant life is destroyed.
Learn more about Estuaries in brainly.com/question/17564221
A 28-year-old presets to the ER reporting severe chest pain that worsens with respirations or lying down. Other signs include a fever, tachycardia, and a friction rub. Assessment findings support which medical diagnosis?A. Acute pericarditis.B. Myocardial infarction (MI).C. Stable angina.D. Pericardial effusion.
Answer:
The answer is letter A
Explanation:
Acute pericarditis. Because this inflamation causes chest pain, pericardial friction rub, fever. It is often associated to viral infecctions , but it may also be caused by other diseases and drug use.
What is the relationship between proto-oncogenes and oncogenes?
Answer:
Oncogenes result from a mutation in proto-oncogenes.
Explanation:
Protooncogenes control the growth and division of cells.The proteins encoded by proto-oncogenes include growth factors, growth factor receptors, transcription factors and signal transducers.They contribute to the transformation process by driving cell proliferation or reducing sensitivity to cell death.Several types of genetic and epigenetic changes convert these proto-oncogenes to oncogenes.Oncogenes arise due to the changes that increases the expression of proto-oncogenes .Oncogenes are one of the causes of cancers.A proto-oncogenes can turn into oncogene by following ways:
A point mutation such as deletion, insertion and substitution in the proto-oncogene can lead to formation of oncogenes. Chromosomal translocation may result in activation of proto-oncogene as seen in Burkitt's lymphoma.Insertion of a mobile genetic material such as retrovirus changes the gene expression, but leaves their coding sequence intact. Activation of proto-oncogene can also occur from reduplication and amplification of DNA sequence.Final answer:
Proto-oncogenes are positive cell-cycle regulators. When mutated, they can become oncogenes and cause cancer. For example, the oncogene myc is involved in Burkett's Lymphoma.
Explanation:
Proto-oncogenes are positive cell-cycle regulators. When mutated, proto-oncogenes can become oncogenes and cause cancer. Overexpression of the oncogene can lead to uncontrolled cell growth. This is because oncogenes can alter transcriptional activity, stability, or protein translation of another gene that directly or indirectly controls cell growth. An example of an oncogene involved in cancer is a protein called myc. Myc is a transcription factor that is aberrantly activated in Burkett's Lymphoma, a cancer of the lymph system. Overexpression of myc transforms normal B cells into cancerous cells that continue to grow uncontrollably. High B-cell numbers can result in tumors that can interfere with normal bodily function. Patients with Burkett's lymphoma can develop tumors on their jaw or in their mouth that interfere with the ability to eat.
The short narrow tube that runs from the auricle to the tympanic membrane
Answer:
External auditory meatus
Explanation:
The pinna leads into the external auditory meatus which is a tube that directs sound waves to the tympanic membrane. The tube is lined with hairs which trap solid particles that may enter the ear. It is also lined by wax secreting cells whose function is to secrete wax that traps dust and prevents entry of solid particles. The wax also maintains the flexibility of the eardrum.
The process of gathering information about events and their relationships within an organization's internal and external environments is: Technological scanning Environmental scanning Regulatory factors All of them
Answer:
Option B
Explanation:
Environmental scanning is done by internal scanning committee with an objective to establish and analyze the relationship between the events happening within the organization and its internal and external environment parameters.
This analysis helps scanning committee in taking effective measures to align the future course of action and direction of organization. This scanning is done regularly at a certain fixed interval for effective management.
Hence, option B is correct
Final answer:
The process of 'environmental scanning' involves the collection and analysis of information to assess internal and external environmental factors affecting an organization. It enables foresight into potential trends, challenges, and opportunities, integral to strategic planning.
Explanation:
Understanding Environmental Scanning
The process of gathering information about events and their relationships within an organization's internal and external environments is known as environmental scanning. This practice involves exploring various elements such as technological advancements, regulatory factors, economic trends, social changes, and cultural impacts. Environmental scanning enables organizations to anticipate potential challenges and opportunities, thereby facilitating strategic planning and decision-making.
An important aspect of environmental scanning is identifying 'signals of change' which are empirical indicators of upcoming trends or shifts. These might include technological breakthroughs, shifts in consumer behavior, policy changes, or socio-economic transformations. Futurists and foresight practitioners analyze these signals to develop actionable insights, thereby contributing to an organization's resilience and adaptability. Furthermore, this continuous process assists in shaping the strategies that address or incorporate environmental changes, including those related to globalization, a digitalizing world, and climate variations.
Overall, environmental scanning is an invaluable tool for organizations to stay competitive and relevant in a dynamic business landscape. It ensures that decision-makers are informed about the internal and external factors that may impact their operations now and in the future.
Galápagos medium ground finches are found on Santa Cruz and San Cristóbal islands, which are separated by about 100 km of ocean. Occasionally, individuals from either island fly to the other island to stay. This can alter the allele frequencies of the population through which of the following mechanisms?
Natural selection
Genetic drift
Gene flow
Mutation
Answer:
Gene flow
Explanation:
Gene flow, also known as migration, gene migration or allele flow, is the movement of genetic material when individuals move from one place to another, this migration generates a modification in the allele frequencies combining the gene pool between both populations. This is exactly what is happening in the example given.
I hope you find this information useful and interesting! Good luck!
A small town in the piney woods of East Texas has a soccer field composed of native grasses. The soccer field is mowed once a week.
What effect does continual mowing have on the ecology of the field?
A)
Mowing increases the likelihood of nonnative species displacing native species.
B)
Mowing increases the number of species found in the field.
C)
Mowing causes different types of communities to form across the field.
D)
Mowing maintains a low species diversity by inhibiting succession.
Explanation:
D) Mowing maintains a low species diversity by inhibiting succession.
Mowing reduces the chances of growth of a new species within the community that may add to its complexity.
Succession involves small scale changes within a community that occur repeatedly over the life of that community. Ecological communities are highly dynamic- they gradually evolve. Typically their progression involves:
colonizing species exploiting uninhabited areas (Primary succession) becoming a habitable and increasingly complex community there is increased diversity of organisms (Secondary)Further Explanation:
The makeup of biological communities is crucial to defining Primary and Secondary succession; eventually, through changes in this makeup, a steady-state or equilibrium is reached called a climax community. While Primary succession starts off with the modification of a previously unoccupied area along with increasing variation; secondary succession begins after major disruption in the community such as fires, storms and flooding.
However, the process of becoming a climax community can be pretty complicated- it is very dependent on other factors like temperature and rainfall. Communities that experience rapid change, frequent major disruptions and even human intervention, are less likely to attain a stable equilibrium and may never become climax communities.
Learn more about ecological succession at brainly.com/question/2456852
#LearnWithBrainly