Answer:
When the pollen tube grows into the ovule
Explanation:
Simmilar to animals, fertilization occurs when the egg (ovule) and the sperm join together to produce a new individual. In flowers, when the pollen tube grows into the ovlue is when pollen and ovule join together and fertilization occurs. A new seed is the produced, ready to produce a new individual.
Competent cells
are able to take up naked DNA.
are antibiotic resistant.
occur naturally.
can be created in the laboratory.
are able to take up naked DNA, occur naturally AND can be created in the laboratory.
Answer: Competent cells are able to take up naked DNA, they occur naturally and can be created in the laboratory
Explanation: Competent cells are cells that can modify its genetic make up and take other DNA using transfomation. Competent cells are commonky made from e.coli because it can replicate faster, readily available for use. DNA is cleavedusing restriction enzymes making up sticky ends.
Check answers.
1. The active site
A. Located in an enzyme (my answer)
B. Is rich in amino acid
C. Is located on a substrate
D. A and B
E. B and C
2. Anabolism is defined as the
A. Sum of all chemical reactions
B. Degradation of polymers in monomers
C. Synthesis of polymers from monomers (my answer)
D. Exchange of elections in chemical reactions
1) A. Located in an enzyme
2) C. Synthesis of polymers from monomers
You're all good!
Answer:
The active site refers to the region present in an enzyme where the binding of the substrate takes place, and the chemical reaction occurs. The amino acids of the enzyme protein combine with the substrate in the active site. Hence, for question 1 the correct answer is option A.
The two kinds of metabolic reactions occur in the cell, that is, catabolism and anabolism. In the anabolic reactions, the energy is consumed, and the small molecules combine to produce the bigger ones. Hence, for question 2 the correct answer is option C.
______ contains large amounts of potassium
A. Nephridium
B. Malpighian Tubes
C. Kidneys
D. None of the above
Answer:
Option B, Malpighian Tubes
Explanation:
In excretory system of Arthropods, the malphigian tubules constitute to be the main excretory organs in which bicarbonates of sodium and potassium, uric acid and water are formed. These maplhigian tubules are able to reabsorb the bicarbonates of potassium and sodium and transfers them into the blood known as haemolymph. The potassium ions are pumped out from the tubule into blood by potassium ion pump
Hence, option B is correct.
Which of the following describes the chromosomes in a fertilized egg?
A. Only from the mother
B. Only from the father
C. The diploid number
D. The haploid number
A fertilized egg contains the diploid number of chromosomes, which includes one set from the mother and one from the father, totaling 46 chromosomes in humans.
Explanation:The chromosomes in a fertilized egg are diploid, which means they contain two sets of chromosomes, one set from each parent. In humans, this amounts to a total of 46 chromosomes, with 23 being maternally derived (from the mother's egg) and 23 paternally derived (from the father's sperm). Therefore, the answer to the question would be C. The diploid number. Haploid cells, like the sperm and egg, have only half the number of chromosomes, which combine to form a diploid cell during fertilization. This cellular fusion results in a zygote, the initial cell of a new organism that contains a full set of chromosomes.
Which of the following are characteristics of arthropods? 1. Protostome development 2. Bilateral symmetry 3. A pseudocoelom 4. Three embryonic germ layers 5. A closed circulatory system
Answer: 1. Protostome development./2. Bilateral symmetry/4. Three embryonic germ layers
Explanation:
Over 600 million years ago some animals invaded aquatic and terrestrial environments in the pre-Cambrian period. These animals were enforced by huge evolutionary irradiation, and now they occupy every environment on planet Earth. From tiny insects and crustaceans smaller than 1mm in length to giant crabs from Japan that can reach 3m (with open legs), the arthropods are found in all size models, with an estimated number of more than one million species described. Concerning characteristics they are - Bilateral, triploblastic( Three embryonic germ layers), prostomial. Internally and externally segmented body, divided into at least two regions, head, and abdomen; typically with a cephalic shield or carapace. Opened circulatory system; the dorsal heart is a muscle pump with lateral Ostia for blood return.
A common column material used in size-exclusion chromatography is dextran, a polysaccharide of glucose. Which type of interaction most likely occurs between proteins and the dextran column material?
Answer:
Hydrogen bonding
Explanation:
A hydrogen bond is a form of the electrostatic force of attraction which takes place between the hydrogen atom and a more electronegative atom such as nitrogen, fluorine, and oxygen. Hydrogen bond falls in the category of weak forces. In size-exclusion chromatography, the type of interaction that takes place between the proteins and dextran is hydrogen bonding. The hydrogen bonding is possible because dextran, being a polysaccharide of glucose has several hydroxyl groups and thus, they get involved in the hydrogen bonding.If a nearsighted person has a far point df that is 3.50m from the eye, what is the focal length f1 of the contact lenses that the person would need to see an object at infinity clearly?
Answer:
[tex]-3.50[/tex] meter
Explanation:
A nearsighted person uses concave lens.
Given -
Far point i.e distance of object [tex]= - 3.5[/tex] meter
Distance of image is not given . Hence we will assume that the image can be formed at any distance. We will take "di" [tex]=[/tex] infinity
As we know
[tex]\frac{1}{f} = \frac{1}{di} + \frac{1}{df} \\[/tex]
Substituting the given values in above equation, we get -
[tex]\frac{1}{f} = \frac{1}{infinity} + \frac{1}{-3.50}\\ \frac{1}{f} = 0 + \frac{1}{-3.50}\\ f = -3.50[/tex]
Hence, the focal length of the contact lens is equal to [tex]-3.50[/tex] meter
Bioinformatics includes _____. I. using computer programs to align DNA sequences II. creating recombinant DNA from separate species III. developing computer-based tools for genome analysis IV. using mathematical tools to make sense of biological systems II and III I and II I, III, and IV II and IV
Answer: the correct answer is I, III and IV
Explanation:
Bioinformatics include using computer programs to align DNA sequences, developing computer-based tools for genome analysis and using mathematical tools to make sense of biological systems.
A collection of closely related animals or plants that share a similar genetic evolutionary history but cannot necessarily interbreed to produce fertile offspring is referred to as a _____. species genus tetraploid polyploid diploid
Answer:
Genus
Explanation:
Genus is a group of related plant or animal species. These group of species share a common evolutionary history which means that they are descended from a recent or distant common ancestor. These group of plant or animal species can not interbreed among themselves as the individuals of the different species can not interbreed to give rise to the fertile progeny.
Example: Solanum is a plant genus that includes many species such as nigrum, tuberosum, etc. The plants of S. nigrum and S. tuberosum can not interbreed in nature as they belong to different species.
During the 1950s, a scientist named Lysenko tried to solve the food shortages in the Soviet Union by breeding wheat that could grow in Siberia. He theorized that if individual wheat plants were exposed to cold, they would develop additional cold tolerance and pass it to their offspring. Based on the ideas of artificial and natural selection, do you think this project worked as planned?
A. Yes; the wheat probably evolved better cold tolerance over time through inheritance of acquired characteristics.
B. No, because Lysenko took his wheat seeds straight to Siberia instead of exposing them incrementally to cold.
C. No, because there was no process of selection based on inherited traits. Lysenko assumed thatexposure could induce a plant to develop additional cold tolerance and that this tolerance would be passed to the plant's offspring.
D. Yes, because this is generally the method used by plant breeders to develop new crops.
Answer:C
Explanation:
In order to draw a conclusion he needed to do an experiment based on his hypothesis first, then be able to conclude from his results if these breeds can real survive the cold weather.
Use the model to explain how celiac disease interrupts the normal transportation of energy and other nutrients from the digestive system to the circulatory system.
Answer:
According to the model, the "villi" of small intestines is being damaged as an impact of celiac disease. Small intestines are responsible for absorption of nutrients and minerals from food, this occurs through villi, in case of damaged villi absorption is interfered, thus disturbing the digestive system. If the nutrients, minerals or vitamins are not being absorbed well by small intestines then they will be excreted out of the body and will not be transported to the blood and other areas, this would result in deficiency of minerals and vitamins in blood that cause weakness.
Answer: Plato Answer
The fingerlike shape of the villi is very important for nutrient absorption because it increases the surface area of the small intestine. In celiac disease, the villi flatten, decreasing the surface area of the small intestine. As a result, fewer nutrients get absorbed. Also, the model shows that celiac disease damages the epithelial cells of villi. The epithelial cell layer is important for the diffusion of nutrients to the capillaries. Without a healthy epithelial cell later, fewer nutrients may be absorbed, and the body may not have enough energy to perform its functions.
A garden aboard the International Space Station allows space scientists to research the growth of plants in space. This research is important because astronauts will need to grow their own food to survive long space journeys.
What challenges would you expect scientists to face when growing plants in space? What challenges will the astronauts have with meeting their own energy needs?
Scientists are also evaluating plants for gene mutations that would help them grow better in space environments. What traits could a plant have that would help it grow better in space?
Answer:
Some of the challenges that scientists might face in space when growing plants would be the fact that plants must have carbon dioxide to carry out their process, which is why they are grown in special chambers. It is true that the astronauts would put off some carbon dioxide, but perhaps not enough. You would also be trying to grow plants in a zero gravity environment, which they aren't accustomed to.
The astronauts would have to be able to provide an extremely large amount of food in order to meet their nutrition needs. There would have to be enough room to grow an adequate amount of food aboard the ship. The plants would also need to be able to produce more than one crop per growing.
If scientists could genetically modify plants to help them grow better in space, they would need to make them able to thrive in a low gravity setting. They would also need to try and engineer them to need less water to survive. They would need to be strong enough to survive the lift off when going into space. The plants would also need to be able to regenerate and produce vast quantities of food.
Explanation:
The challenges that you could expect scientists to face when growing plants in space are microgravity, limited space, light availability, etc.
Scientists are anticipated to confront many obstacles while cultivating plants in space:
Microgravity: The lack of gravity in space has an impact on plant growth and development. Space and resources are limited inside a spaceship or space station. Because sunlight is restricted in space, artificial lighting systems must be employed for photosynthesis.Temperature and humidity control: It is difficult to maintain appropriate temperature and humidity levels within a spacecraft's controlled environment.Astronauts, on the other hand, may encounter difficulties in satisfying their own energy requirements during extended space journeys:
Food supply is in short supply.
Nutritional necessities.
Energy use.
Plants with the following characteristics may grow better in space:
Dwarfism: Due to restricted vertical growth area and lower gravitational effects, plants with shorter height might be favourable in space.
Compact and efficient root systems: Plants with well-developed root systems that can absorb water and nutrients in tight locations will flourish in space habitats' limited root space.
Thus, scientists are currently researching and performing experiments to find and create plants with these desired features in order to increase the effectiveness of plant growth in space and enable astronauts to generate their own food sustainably during extended space trips.
For more details regarding scientists, visit:
https://brainly.com/question/28667423
#SPJ2
Which of the functions listed below is/are attributed to various plasma proteins? 1. contribute to blood clotting 2. exert colloid osmotic pressure (to assist the maintenance of water balance) 3. help attack viruses and bacteria 4. function as transport proteins for several steroid hormones 5. transport fat-soluble vitamins 6. transport oxygen
Answer:
The correct answers are options 1, 2, 3, 4 and 5.
Explanation:
Plasma proteins are the proteins found in blood plasma and exhibit distinct functions, like the conduction of various biochemicals in the circulatory system, maintaining the balance of fluid and levels of electrolyte in the body, regulating osmotic pressure, and others.
Some of the more general plasma proteins found in the plasma of the blood are serum albumin, which helps in maintaining the osmotic pressure and transporting biomolecules around the body. Fibrinogen that helps in the formation of blood clots, and globulins that provides antibodies to fight against bacteria and viruses.
A geneticist is mapping the chromosomes of the newly captured gremlin. Stripe is heterozygous for three linked genes with alleles Ee, Hh, and Bb, that determine if gremlins are evil (E), have hair (H), and biting teeth (B). In order to determine if the 3 genes were linked, a standard testcross was done, and the 1000 offspring had the following genotypes: 48 ee Hh bb 36 ee hh Bb 400 ee Hh Bb 4 Ee Hh Bb 426 Ee hh bb 46 Ee hh Bb 38 Ee Hh bb 2 ee hh bbChoose the alleles on the homologous chromosomes of the heterozygous individuals with the correct gene order.What is the recombination frequency between genes E and B? a. 8.4% b. 9.0% c. 42.6% d. 9.4% e. 10.0%
Explanation:
A geneticist is mapping the chromosomes of the newly captured gremlin. Stripe is heterozygous for three linked genes with alleles Ee, Hh, and Bb, that determine if gremlins are evil (E), have hair (H), and biting teeth (B). In order to determine if the 3 genes were linked, a standard testcross was done, and the 1000 offspring ...
Answer:
The correct gene order is H-e-B
Recombination frequency between genes E and B = 10%
Explanation:
In linkage parental genotype is always in greater number than recombinants, hence:
400 = eeHhBb : Parental
426 = Eehhbb : Parental
Double crossovers have the smallest number hence:
EeHhBb = 4 : Double recombinant
eehhbb = 2 : Double recombinant
Double cross over places middle allele from one sister chromatid to other one. Hence a non parental allele of the middle gene is present with parental alleles of the flanking genes.
Here recombinant type is EHB and parental type is eHB . Only gene order H-e-B would result in double cross over which would give EHB and ehb double recombinants. Hence, the correct gene order is H-e-B.
Single crossover between gene E and B would result in Heb and hEB progeny ( 48 and 46 )
Recombination frequency between E and B = [(Double recombinants + Single E and B recombinants) / Total progeny)*100]
= [ (4 + 2 + 48 + 46)/1000] * 100
= 100/1000
= 0.1 * 100 = 10%
Anybody know this?
The organ that produces the egg cell in the life cycle of the pine is called the:
ovules, antheridia, or archegonium
Answer:
Ovules
A
Explanation:
The ovule can be found on a megasporophyll, which itself is located on a scale. On each megasporophyll of the female strobilus two seeds can develop after fertilization. In each megasporangium (the female carrier of spores) a megasporocyte is present which leads to four megaspores after meiosis.
How has the eye accomplished correction for spherical aberrations? Fill in the blanks. The _____ is flatter at its ____ than at its ______, and the ______ is denser in the center and hence refracts more strongly at its core than at its outer layers.
Answer:
Cornea, margin, center, lens
Explanation:
Spherical aberration is defined as a class of aberration which is found in various optical systems which use the elements with various spherical surfaces.
The eye accomplished correction for spherical aberrations through cornea and lens.
The cornea is a transparent front part of eye. In humans, the cornea's refractive power is about 43 dioptres. The cornea is flatter in shape at it margin than at its center.
The lens in the eye focuses light rays which pass through it so that clear images of objects can be created which are positioned at different distances. Eye lens is of ellipsoid and biconvex shape. It is denser at the center.
1. What limits do common names have?
They depend on geography.
They often use multiple words.
They are non-descriptive of the organism.
They are descriptive of the organism.
They can be in different languages.
None of the above
Answer:
Explanation:
Common names are local names that are given to organisms. These names are widely and locally accepted even within scientific bodies in order to avoid the rigors of having to use latin names of organisms.
Some of the limits of using common names are:
1. They can depend on geography: some common names are restricted in their use based on their acceptance by set of people. In some other climes, they might not be accepted. This is one big limitation in using common names.
2. They often use multiple words: within a particular area, an organism can be called different names. This is yet another big limitation of common names.
3. They are can be descriptive or non-descriptive of the organism: some common names are descriptive and they can easily tell us about an organism. Others might not even relate to to the organism at all.
4. They can be in different languages: Most languages have a common name for all organisms. This pose a serious scientific barrier when studying such species.
Common names often depend on geography, use multiple words, and can be non-descriptive or overly descriptive. They can also exist in different languages, creating potential confusion.
Explanation:The common names of organisms often have certain limitations. Firstly, they often depend on geography. This means a species might have one common name in one region and another name in a different region. Secondly, they often use multiple words which can complicate their usage. Thirdly, they can be non-descriptive or overly descriptive of the organism. For instance, a 'silverfish' is not a fish, but an insect. Lastly, they can exist in different languages, causing confusion.
Learn more about Common Names here:https://brainly.com/question/547437
#SPJ3
What are the receptors for static equilibrium?
The receptors for static equilibrium are mechanoreceptors located in the inner ear. They include hair cells with stereocilia which are found in the vestibule of the inner ear. These receptors detect gravity and linear acceleration, contributing to the individual's sense of balance.
Explanation:The receptors for static equilibrium are specific types of mechanoreceptors located in the inner ear. These receptors, known as hair cells with stereocilia, can sense head position, movement, and the body's motion. The hair cells are situated within the vestibule of the inner ear. Specifically, the utricle and saccule sense head position, and the semicircular canals sense head movement. These cells respond to static equilibrium stimuli including gravity and linear acceleration (such as when the head changes orientation or moves in a straight line). All the signals generated are transmitted through the vestibulocochlear nerve to the brain stem and cerebellum, allowing the body to maintain balance.
Learn more about Static Equilibrium Receptors here:https://brainly.com/question/32407991
#SPJ11
An atom that undergoes radioactive decay and has a large nucleus most likely contains
Answer:
An atom that undergoes radioactive decay and has a large nucleus most likely contains a high neutron-proton ratio.
here is the full questiojn below.
An atom that undergoes radioactive decay and has a large nucleus most likely contains:
(a) a high neutron-proton ratio.
(b) a low neutron-proton ratio.
(c) more protons than electrons.
(d) more electrons than protons.
Answer:
(a) a high neutron-proton ratio
Explanation:
An atom that undergoes radioactive decay and has a large nucleus most likely contains a high neutron-proton ratio. This stance is true because, the neutron–proton ratio of an atomic nucleus is the ratio of its number of neutrons to its number of protons. Among stable nuclei and naturally occurring nuclei, this ratio generally increases with increasing atomic number. This is because electrical repulsive forces between protons scale with distance differently than strong nuclear force attractions. As such, an atom that requires to undergo radioactivity and has large nucleic will most likely contains a high neutron-proton ratio.
Isotopes are atoms with the same atomic number i.e (the same number of protons) but different mass number (i.e number of neutrons). Isotopes are named according to their mass numbers; example chlorine-35, and chlorine-37. Their atomic numbers remain as 17 but neutron numbers differ (35 and 37).
What is the role of renin in the secretion of aldosterone?
Answer:
Explanation:
Aldosterone is a hormone which is produced by the adrenal glands which are present above the kidneys. The role of aldosterone is to regulate the blood pressure. It causes the reabsorption of water and salts into the bloodstream during the kidney filteration process. Hence, maintains the blood volume, restors blood pressure and salt level.
Renin is an enzyme. It facilitates chemical reactions which stimulates the synthesis of angiotension II, it directs the synthesis of aldosterone.
Renin, produced by the kidneys in response to low blood pressure or blood volume, triggers a chain reaction leading to the secretion of aldosterone. Aldosterone then promotes sodium and water reabsorption in the kidneys, thereby increasing blood volume and pressure. This process is part of the renin-angiotensin-aldosterone system (RAAS).
The role of renin in the secretion of aldosterone is crucial in the regulation of blood pressure and fluid balance, through the renin-angiotensin-aldosterone system (RAAS). When blood pressure or blood volume is low, specialized cells in the kidneys, known as juxtaglomerular (JG) cells, secrete the enzyme renin. Renin then catalyzes the conversion of angiotensinogen, a blood plasma protein produced by the liver, into angiotensin I. This is further converted into angiotensin II in the lungs by angiotensin-converting enzyme (ACE). Angiotensin II serves multiple roles:
It acts as a potent vasoconstrictor, narrowing blood vessels to increase blood pressure.It stimulates the release of the hormone aldosterone from the adrenal cortex.It increases thirst and the secretion of antidiuretic hormone (ADH), both of which contribute to raising blood pressure.Aldosterone promotes sodium and water reabsorption in the kidneys, which increases blood volume and blood pressure. This process ensures homeostasis in the body by adjusting fluid and electrolyte balance in response to varying conditions.
Which vessel leaves the right ventricle of the heart to take oxygen-poor
Answer:
Pulmonary artery
Explanation:
The pulmonary artery delivers oxygen poor blood to the lungs that comes from the right ventricle of the heart. The pulmonary artery is also the only artery in the body that carries unoxugenated blood. When the blood goes to the lungs, it picks up oxygen and drops off carbon dioxide to be expelled from the body. The pulmonary vein then takes the oxygen-rich blood and brings it back to the heart.
The light reactions of photosynthesis use chemiosmosis to produce ATP that will be used in the Calvin cycle. The electrochemical gradient that drives this chemiosmosis is formed across which structure(s)?
Answer: Thylakoid membrane.
Explanation:
Photosynthesis is a chemical process carried out by plants, algae, and certain microorganisms, whereby solar energy is captured and converted into chemical energy in the form of ATP and organic compounds. During electron transfer, the protons (H +) of the H atoms are sent to the interior of the thylakoids through their membranes, producing an energy gradient. This electrochemical gradient generates enough energy to phosphorylate ADP and produce ATP, similar to the oxidative phosphorylation that occurs in mitochondria. The end products are ATP and NADPH.
The colonization of land by animals: took place billions of years ago.was made easier by high atmospheric levels of carbon dioxide.preceded the presence of plant species on land.may have taken place independently by a variety of species descended from aquatic ancestors.
Answer: the correct answer may have taken place independently by a variety os species descended from aquatic ancestors.
Explanation:
Scientists think that life started in the oceans as early as 4 to 4.2 billion years ago.
The molecules that make up food contain energy. How does the human body get energy from the food molecules?
A- by breaking and reforming chemical bonds in the molecules
B- by combining the molecules together
C- by using them to from ionic bonds
D- by adding energy to the molecules
Answer: A: by breaking ans reforming chemical bonds in the molecules
Explanation: There is energy stored in chemical bonds between food molecules (this is referred to as ATP, or Adenosine TriPhosphate, which is the type of energy your body uses). When chemical bonds are created, some energy is stored in those bonds (personally, I like to think that it's because the bonds need energy to stay bonded, but there is no science to prove this). When one of these bonds are broken, the energy that was stored is released, and can then be used by your body. Your body then uses a different type of energy (called ADP, or Adenosine DiPhosphate) to reform the bonds, which then go on to become waste products.
Answer:
It's A. By breaking them down and reforming chemical bonds in the molecules.
Explanation:
<3
Summarize the steps of the scientific method.
Answer:
1) make an observation- what problems do you notice in the natural world? these probelms all have a solution, what do you think would be a way to solve them,
2) create a hypothesis- create an educated guess on how your solution to fix the problem will work, it must be highly specific and it cant be a yes or no answer
3) test the hypothesis- test to confirm your theory
4) draw conclusions- was this a good solution or not? why?
A go cart rolling at a speed of 2 m/s begins to accelerate down an inclined street at a constant rate of 1.5 m/s¶. It takes the go cart 6 seconds to reach a level portion of the street. At what speed will the cart be traveling by the time it reaches level ground.
Answer:
[tex]11\frac{m}{s}[/tex]
Explanation:
As per the Newton's first law of motion,
[tex]v = u + at\\[/tex]
where "v" is the final speed
"u" is the initial speed
"a" is the acceleration
and "t" is the time taken
Substituting the given values in above equation, we get -
[tex]v = 2 + (1.5)*6\\= 2 + 9\\= 11[/tex] [tex]\frac{m}{s}\\[/tex]
The cart be traveling at a speed of [tex]11 \frac{m}{s}[/tex] by the time it reaches level ground.
Mitochondria and chloroplasts, organelles inside of eukaryotic cells, have their own membranes and genetic material. This is evidence of A. The endosymbiotic theory. B. Abiogenesis. C. Coevolution. D. Horizontal gene transfer.
Answer: The answer is A
Explanation:...Where the endosymbiotic theory deals with bacterial characteristics and the development of the mitochondria and chloroplast in eukaryote cells.
Which of the following is often provided by anthropologists and biologists as a possible explanation for the development of bipedal hominids?
A. Standing upright allowed for sightlines over tall grasses and savannah shrubbery
B. Standing upright allowed for better tree climbing
C. Standing upright allowed for more efficient movement
D. Standing upright allowed for better foraging of tree fruits
Answer:
The answer is C. Standing upright allowed for sightlines over tall grasses and savanna shrubbery
Hope this helps!!!
Please mark as brainliest:)
Answer:
The correct answer is option A-standing upright allowed for sightlines over tall grasses and savannah shrubbery.
Explanation:
Bipedalism or walking upright on two legs departed the hominids- Neanderthals and Homo erectus from four-legged apes. Many reasons were given to support the bipedalism of hominids like:
1. They needed to stand over tall grass to minimize the body exposure to the sun in savannah.
2. They needed to stand over tall grass to increase the sightlines to gather foods for themselves especially females and young ones which required hands to be free.
Thus, option A is the correct option.
Assume a population of purple and white flower pea plants (2000 total plants) is in Hardy-Weinberg equilibrium. The frequency of white flower plants is 0.16. On the basis of this information, determine the following:
a. The frequency (decimal form) of heterozygous purple plants. Round to 2 significant digits.
b. The frequency (decimal form) of the dominant allele (1 significant digit).
c. The number of homozygous purple flower plants.
I tried to take 2pg = 2(0.84)(0.16) for part A and got 0.268 (approximately 0.27) for the heterozygous purple flower but that was incorrect.4
Answer:
a) [tex]0.48[/tex]
b)
[tex]p= 0.4\\q=0.6[/tex]
c) [tex]720[/tex]
Explanation:
Given ,
Frequency of white flower plant ([tex]p^2[/tex]) is [tex]0.16[/tex]
Thus, frequency of dominant white allele ([tex]p[/tex]) is equal to [tex]\sqrt{0.16} \\= 0.4[/tex]
As we that, as per Hardy-Weinberg equilibrium equation
[tex]p+q=1[/tex]
Substituting the value of [tex]p[/tex] in above equation, we get
[tex]0.4+q=1\\q=1-0.4\\q=0.6[/tex]
a) As per Hardy-Weinberg equilibrium equation
[tex]p^2+q^2+2pq=1\\[/tex]
Substituting the given and calculated values in above equation, we get -
[tex]0.4^2+0.6^2+2pq=1\\0.16+0.36+2pq=1\\2pq=1-0.16-0.36\\2pq=0.48[/tex]
b) The frequency (decimal form) of the dominant allele
[tex]p= 0.4\\q=0.6[/tex]
c) number of homozygous purple flower plants
[tex]=[/tex] frequency of purple flower plants ([tex]q^2[/tex]) [tex]*[/tex] Number of flowers
[tex]= q^2 * 2000\\= (0.6^2)*2000\\= 0.36 * 2000\\= 720[/tex]
PLZ HELP I NEED IT ANSWERED NOW THANKS!! Based on the diagram above, which layer of the intestine contains glands that secrete intestinal juices for digestion?
A. A
B. B
C. C
D. D
Answer:
A.
Explanation:
Layer A is the mucosa of the intestinal tract. It where absorption and secretion takes place. This layer also contains glands like Brunner's gland, which secretes fluids to protect the lining of the intestines from the acidic juices of chyme. Secretions of the mucosa also contain enzymes and hormones that aid in digestion.