Answer:
The correct answer would be C) Genetic variation existed. Natural selection occurred. Allelic frequencies changed.
Hardy-Weinberg law states that the allelic frequency of a population remains constant generations over generations in absence of evolutionary factors such as selective breeding, natural selection, genetic drift et cetera.
In the given scenario, natural selection has taken place due to the which the allelic frequency of a population changes over time.
In the original population, the allele frequency of g would be higher as it would have given the survival advantage when long-term ice deposits were used to present.
However, in absence of ice, the white fur would not be beneficial as it would be easily detected by predators.
Thus, the allele frequency of g would decrease in a population and with the help of natural selection the allele frequency of G would increase in the population.
Thus, the allele frequency of a population changes as a result of natural selection.
Which of the following best describes how a cell’s DNA can change through mutations?
DNA segments from broken-down prokaryotic cells are taken in and incorporated into the DNA of living cells.
A virus takes in a segment of DNA from one bacterial cell and inserts it into another bacterial cell.
A bridgelike connection forms between two prokaryotic cells, through which genetic information is transferred.
Changes in a cell’s DNA sequences occur during replication, and those changes are passed on to daughter cells.
Although the foxp2 amino acid sequence is highly conserved, humans have two unique amino acids that chimpanzees don't have. these unique amino acids are highly correlated with differences in _____ seen between chimps and humans.
The answer is language. Humans have a high degree of language acquisition and complexity compared to chimpanzees due to foxp2 proteins. Foxp2 are transcription factors that are significant in cell proliferation. The difference of 2 in 700 amino acids in the sequence makes the protein to be differentially regulated between the two species.
The right answer is language (speech, talking, or every thing related to communication skills).
Forkhead-Box P2 protein (FOXP2) is a transcription factor belonging to the Forkhead-Box3,4 protein group. it is recognized that FOXP2 plays a large role in language transmission, including grammatical abilities.
The name "speech gene" has been popularized for the FOXP2 gene. But many other vertebrates also have this gene, and FOXP2 seems to play a role in verbal communication.
A client explains to a nurse that he had been taking amitriptyline (elavil) for depression having some improvement. the provider recently changed his medication to clomipramine (anafranil). the client is confused as to why his medication was changed to "the same type of drug." what is the nurse's best response?
The nurse should explain well to the client that though the medication is similar, some client respond better to the other drug. Moreover, it could be that the provider has changed his medication to clomipramine because amitriptyline has unbearable side effects like impaired immune and sexual function, weight gain, blurred vision, trouble urinating and constipation.
what is the name giving to a cell divson eukyrotic
what are the differences between protists and fungi
Protists and fungi are both eukaryotic, but they differ in cell wall composition and motility. Fungus-like protists have cellulose cell walls and can be motile, unlike fungi which have chitin cell walls and are mainly non-motile.
Explanation:The differences between protists and fungi are found in their cellular structures and modes of nutrition. Both are eukaryotic organisms, which means they have a true nucleus. Fungus-like protists, such as slime molds and water molds, share some similarities with fungi; for instance, they are heterotrophic, have cell walls, and reproduce through spores. However, their cell walls are composed of cellulose, unlike the chitin found in fungal cell walls. Furthermore, while fungi are strictly heterotrophic and mainly non-motile, fungus-like protists can be motile during certain life stages and have more complex life cycles, which include both asexual and sexual reproduction.
True or false: dna that is loosely wound is the easiest to divide.
How long is one cardiac cycl.e? what is produced during one cardiac cycle?
One cardiac cycle typically lasts between 0.6 to 0.8 seconds. During one cardiac cycle, the heart produces a heartbeat, which involves the contraction and relaxation of the heart muscle, resulting in the pumping of blood throughout the body.
A cardiac cycle consists of two main phases: systole and diastole. Systole is the contraction phase when the heart pumps blood out, and diastole is the relaxation phase when the heart fills with blood.
The cycle begins with atrial systole, where the atria contract to pump blood into the ventricles, followed by ventricular systole, where the ventricles contract to pump blood out of the heart. After ventricular systole, the entire heart relaxes during diastole, allowing the chambers to fill with blood again.
The duration of one cardiac cycle can vary depending on a person's heart rate. At rest, an average adult's heart rate is about 60 to 100 beats per minute, which corresponds to a cycle duration of approximately 0.6 to 1 second per beat.
During exercise or stress, the heart rate can increase significantly, shortening the duration of each cycle.
During the cardiac cycle, the following events occur in sequence:
1. Atrial contraction (atrial systole) pumps blood into the ventricles.
2. Ventricular contraction (ventricular systole) pumps blood to the lungs (right ventricle) and the rest of the body (left ventricle).
3. The aortic and pulmonary valves close to prevent backflow of blood into the heart.
4. The mitral and tricuspid valves open, and the ventricles relax (ventricular diastole), allowing blood to flow from the atria into the ventricles.
5. The atria begin to contract again, and the cycle repeats.
The products of one cardiac cycle are essentially the movement of blood and the maintenance of circulation. The heartbeat generated during the cycle ensures that oxygenated blood is delivered to the body's tissues and that deoxygenated blood is sent to the lungs for reoxygenation.
Why are seedless vascular plants considered paraphyletic rather than monophyletic?
a.some of the groups within the seedless vascular plants (equisetophyta and pteridophyta) are more closely related to each other than to other groups (lycophyta).
b.they share a more recent common ancestor with seeded plants than they do with the non-vascular plants.
c.all of the groups contained within the seedless vascular plants do not have the same ancestor.
d.the group includes their common ancestor but also the seeded descendants of that same ancestor?
The plant containing the vascular tissues but cannot produce seeds or flowers is called seedless vascular plants. They can produce haploid unicellular spores.
The correct answer is:
Option d. The group includes their common ancestor but also the seeded descendants of that same ancestor.
This can be explained as:
The paraphyletic are the groups that originated from the common ancestor and are arranged in the order of their ranks and sizes.In monophyletic the organism is said to be a descendant from a single ancestor.Therefore, seedless vascular plants are paraphyletic as they include plants from common ancestors.
To learn more about monophyletic and paraphyletic follow the link:
https://brainly.com/question/25370836
A 23-year-old woman reports vision loss interspersed with flashing lights before the onset of a very painful headache. during the assessment, she informs the nurse that she has been experiencing these symptoms for the last three months on a weekly basis. these symptoms are those of:
Answer:
Migraine with aura.
Explanation:
Migraine with aura is a neurological disease manifested by migraine attacks preceded by visual or sensory symptoms. The name aura refers to the sensations you notice just before the headache begins.
The most common manifestation of migraine with aura is the so-called visual aura, which can present as flashes of light, dark mosaic-like spots or bright zigzag images - like when you're walking on a road and seeing that heat zigzag emanating from the ground.
In other cases, migraine with aura may manifest as numbness or tingling on only one side of the body - depending on the severity of migraine with aura, one may begin with a tingling in one hand and it may spread all over body, falling asleep to only half of the tongue. However, these sensitive manifestations of migraine with aura are rarer. Generally, the aura begins about 30 minutes before migraine and may or may not persist after the pain begins.
A group of students are walking in the park and one of them takes a picture of a pollen grain that is being blown by the wind. What caption can the student use for this picture?
What theory proposes that evolution occurs steadily (slowly) in tiny changes over long periods of time?
A. Gradualism
B. Relative dating
C. Natural selection
D. Punctuated Equilibrium
What is the brain?
Pleas help
If blood is in short supply which blood type would be most beneficial to have on hand if someone need a transfusion
Complete the henderson-hasselbalch equation with the correct species.
During nitrification, _____.
1plants create nitrogen compounds
2nitrogen is added to the atmosphere
3bacteria break down amonia into nitrogen
4ammonia is changed back into nitrate
What controls the timing of gene expression?
a. the regulatory sequence for a gene
b. the nucleotides that dictate the sequence of amino acids in the protein
c. the coding sequence for a gene
d. the alleles for a gene
e. the transgenic portion of a gene?
Including all of the relevant anatomical structures (and ending with the activation of the cranial nerve), explain how we sense spinning in a chair. what happens when the chair is suddenly stopped
All The different populations that live together in an area make up an______
Rabbits are introduced into a grassland area. Which action of the rabbits would harm the buffalo that live in the grassland?
A.
attracting predators
B.
eating the grass
C.
attacking prey
Answer:B.
Explanation:
eating the grass becasue that what buffalos eat also
gregor Mendel’s research formed the basis of the field of genetics. dominance. recessiveness. selective breeding.
Gregor Mendel’s research formed the basis of the field of genetics. The correct option is A.
What is genetics?Genetics is the study of traits, hereditary variation, and heredity in living things. It is generally considered a scientific field, but it frequently intersects with numerous other life sciences and is closely related to the investigation of data frameworks.
Genetics is a branch of biology that studies genes, genetic variation, and heritability in organisms.
Gregor Mendel, a Moravian Augustinian friar working in Brno in the nineteenth century, was the first to conduct scientific research on genetics.
Genetics research investigates the roles of individual genes or groups of genes in health and disease.
Understanding genetic factors and genetic disorders is essential for learning more about health promotion and disease prevention.
Thus, the correct option is A.
For more details regarding genetics, visit:
https://brainly.com/question/10585140
#SPJ6
According to ainsworth's research using the strange situation procedure, _____ infants used the mother as a safe base from which to explore the environment.
a. securely attached
b. anxious/ambivalent
c. maternally based
d. nonagoraphobic
Answer is a. securely attached.
An infant who is securely attached to its mother is confident enough to explore and play freely in an unfamiliar environment in the presence of the caregiver is present. When the caregiver is present, infant uses her as a "safe base". Only in presence of caregiver infant engages with the stranger and becomes upset in absence of the caregiver. On return of caregiver the child become happy again.
what is the primary advantage of using heuristics rather than algorithms in solving problems? What is the primary disadvantage?
The primary advantage of using heuristics rather than algorithms in solving problems is that it can provide some quick and relatively inexpensive output to the individual.
What is the Heuristics method?The heuristics method may be defined as a type of method that significantly involves mental timesaver for solving problems in a quick way that reveals a result that is sufficient to be practical and functional given time constraints.
The primary disadvantage of heuristics is that it involves some sort of errors that are bounded to the final result. The processes of this method are highly susceptible to biases and prejudice. This is because insufficient data can be utilized in order to make quick decisions may sometimes lead to a false outcome.
Therefore, the primary advantage and disadvantages of the heuristics method are well described above.
To learn more about Heuristic methods, refer to the link:
https://brainly.com/question/28265086
#SPJ2
This is an organism that is made of many parts but cannot make its own food. They are classified by whether they have a backbone or not.
Answer:
Animalia.
Explanation:
Biological system of classification was explained by Carols Linnaeus. He explained the system of classification and explains the different level of classification to classify the organism.
The animals are made of the different body parts and they are heterotrophic organism means that they cannot prepare their own food. The kingdom animalia was further classified on the basis whether they have the backbone ( chordata) and without the backbone ( non chordata).
Thus, the answer is kingdom animalia.
Describe one mutualistic symbiotic relationship and one parasitic relationship involving protists.
Mutualistic relationship involving termites and protozoa, and a parasitic relationship with Toxoplasma gondii and Plasmodium species.
Explanation:Mutualistic relationships involving protists:
Termites have a mutualistic relationship with protozoa in their guts. The protozoa benefit from the enzymes provided by bacterial symbionts, while the termite benefits from the protozoa's ability to digest cellulose, which the termite cannot do itself.Lichens have a mutualistic relationship between a fungus and photosynthetic algae or bacteria. The fungus provides a protective environment for the algae and makes certain nutrients more available, while the algae produce glucose, benefiting both organisms.Parasitic relationships involving protists:
Toxoplasma gondii is a parasitic protist that infects mammals, including humans. It can cause various health issues, particularly in individuals with weakened immune systems.Plasmodium species are responsible for causing malaria, a parasitic disease that affects millions of people worldwide.Learn more about Mutualistic and Parasitic Relationships involving Protists here:https://brainly.com/question/7459391
#SPJ12
Explain the law of large numbers. how does this law apply to gambling casinos?
The law of large numbers is a principle from probability theory, stating that as you repeat a probability experiment, the relative frequency of events tend to approach their theoretical probabilities. In a gambling context, this means that while short-term results can be unpredictable, over the long run, outcomes conform to their theoretical probabilities – which is why casinos, which always have a slight edge, tend to win over the long haul.
Explanation:The law of large numbers is a key principle in probability theory and statistics, stating that as a probability experiment is repeated more times, the relative frequency of an event tends to get closer to its theoretical probability. This means that the more times you repeat the experiment, the closer the outcomes will be to what you would theoretically expect based on probability.
Applying this to a gambling context, let's consider the example of flipping a fair coin. If you flipped it a few times, it's quite likely you could observe solely heads or solely tails. But if you flip it many times, say thousands, the relative frequency of getting heads versus tails starts to approach the theoretical probability of 0.5. This is not to say that the outcomes happen in an orderly or predictable way but, overall, the empirical (observed) frequency starts to approach the theoretical probability.
Casinos rely heavily on this principle. For each game, the house, i.e., the casino, has a slight mathematical edge, or advantage. Over the short run, anything can happen (a player might win big), but in the long run, the casino will always come out ahead due to the law of large numbers. This can be seen in games like roulette, where the house has a 1 in 37 to 1 in 38 edge on each spin, or blackjack, where the house edge ranges between 0.2% and 2% depending on house rules and player strategy.
Learn more about Law of Large Numbers here:https://brainly.com/question/9061041
#SPJ12
Which process creates two new cells from one existing cell in order to maintain homeostasis? Cell division Cellular respiration Photosynthesis Reparation
Answer:
cell division
Explanation:
Distinguish among eons, eras, periods, and epochs, using specific examples.
In a particular context, “epoch” can refer to a particular point of time characterized by a particular event/series of events.
While “era” refers to a period of time characterized by events in a chronological order.
Thus, an “era” can encompass more than one “epoch”.
“Period” can refer to a short interval of time or a very long interval of time.
For example:
“Eon” refers to an indefinitely long time. Eon is presumed to consist of at least 2 eras.
Answer:
Eras, Eons, Epochs and Periods are the division and subdivisions of geological time scale based on the changes in the geography, geology, climate and other characteristics of the earth.
The sequence of the various divisions depends on the length of each unit of time relative to each other.
sequence of time period is as follows:
Eons > Eras > Periods > Epochs
1.Eons-The longest division of time scale which lasts for billion of years.
Geologists recognised three major Eons as:
Phanerozoic Eon (570-present)
Proterozoic Eon (2500-570 mya)
Archean Eon (3800-2500 mya)
2.Eras-eras are the subdivision of Eons which froms the second longest division of time scale. Eras can lasts for tens to hundreds miliion of years.
These are recognised as:
Coenozoic Era (66 mya-present)
Mesozoic Era (66-240 mya)
Paleozoic Era (240-570 mya)
.
3. Periods- Subdivion of time scale which is relatively shorter in time length.
periods can last for tens to million of year
Geologists have divided eras into periods-
Coenozoic Era
Quaternary-(present)- Evolution of humans
Tertiary- Mammals diversified
Mesozoic Era
Cretaceous-extiction of dinosaurus
Jurassic-Dinosaurus diversified
Permian- age of mammals
Paleozoic Era
Pennysylvian-First reptiles
Mississipian-seed ferns
Devonian-first amphibians
Slurian-first land plants
Ordovician - metazoan diversification
Cambrian-first fishes
4.Epochs- subdivision longer than an age but shorter than a period .
Epoch can last for tens of million years.
Bo and luke are competitive body builders and enemies. one day at the gym bo offers luke an apology and some vitamin water. luke drinks the water gets flushed red, overheated, and dies on the way to the hospital in the ambulance. forensic testing confirms substance x was in the water. substance x is also found at bo's home. what is substance x?
The substance x would be called as:
DNP
Dinitrophenol(DNP)DNP is described as an isomeric compound having an aroma that consists of phenol's nitration.
It carries a number of uses which include dyes, explosives, fertilizers, fat loss, through turning the energy in the heat form.
In the given situation, Luke dies because his energy turns excessively in the form of heat which makes it turn into an explosion in his body.
Thus, DNP is the correct answer.
Learn more about "Vitamin" here:
brainly.com/question/985067
According to the question, substance x that caused Luke's symptoms could be a poison like cyanide or arsenic.
The statement suggests that "substance X" potentially caused Luke's symptoms, which resemble those induced by poisons like cyanide or arsenic, including flushing, overheating, and fatality.Forensic analysis would likely detect these toxins in Luke's body and at Bo's residence, thus implicating Bo in the crime. Cyanide and arsenic are notorious for their lethality and are often associated with foul play due to their toxicity and potential for intentional use in harming individuals. Their presence in Luke's body and at the scene would strongly suggest foul play and establish a crucial link between Bo and the crime. Therefore, forensic investigation into the presence of such toxic substances would be pivotal in uncovering the circumstances surrounding Luke's symptoms and subsequent demise, potentially leading to legal repercussions for Bo.Energy in an ecosystem _____.
is recycled
is reused
flows only one way
is returned to the soil through decomposition
Answer: is recycled and reused
flows only one way
is transferred through the food chain
is eventually lost as heat
Explanation: it is important to remember that energy is never “lost” When they say “lost” they mean it is transformed into a different type of energy. Another way energy is transferred is through the food chain, the food chain consists of primary consumers and secondary consumers. Think of primary consumers as herbivores meaning they eat plants. Plants carry energy and when a primary consumer eats a plant that energy from the plant transfers to the primary consumer. Secondary consumers are carnivorous meaning they eat meat, the primary consumer is the secondary consumer's prey. When the secondary consumer eats the primary consumer, the primary consumer’s energy that it obtained from the plant that it (the primary consumer) ate transfers to the secondary consumer.
I really hope this helps!
An organism that is multicellular, heterotrophic, has cell walls, and is unable to move independently would be classified into the the Kingdom ____________. Protista
Fungi
Animalia
Plantae