Complete question:
Consider the following alleles: X1, X2, X3. The different alleles encode enzymes with slightly different rates of reaction, but are otherwise identical. Consider a population that is sampled for these alleles at two different times. Below are the genotypes for each individual in this population at time 1. For the Time 1 population calculate the allele frequencies and genotype frequencies.(4points)
Time 1: Genotypes for each individual in this population
1XX1, X1X2, X2X2, X2X3, X2X2, X2X2, X1X3, X2X2, X1X1, X2X2, X3X3, X2X3, X2X3, X2X3, X2X3, X1X3, X1X1, X1X2, X1X3, X1X2, X1X2, X1X3, X1X1, X2X1, X1X1, X1X3, X3X3, X2X2, X3X3, X2X2
Answer:
allelic frequencies
• p = 0.34
• q = 0.4
• r = 0.27
genotypic frequencies
• X1X1 = 0.17
• X1X2 = 0.17
• X1X3 = 0.17
• X2X2 = 0.23
• X2X3 = 0.17
• X3X3 = 0.1
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
The amphibian heart has a single, undivided ventricle, two atria, a sinus venosus, and a Conus arteriosus. Their sarcopterygian ancestors had hearts with all of these chambers, but the ventricle was partially divided and probably aided in separating pulmonary and systemic circulatory circuits. Check the following statements that could help us understand why amphibian evolution resulted in the loss of the partial ventricular septum.
A .The loss of the ventricular septum probably occurred because blood returning to the heart of amphibians bypasses the ventricle being shunted from the sinus venasus and right atrium directly to the pulmonary artery and lungs.
B. Loss of the partial ventricular septum reflects the fact that blood returning to the heart from the systemic circuit is often highly oxygenated because many amphibians rely on cutaneous and buccal gas exchange, as well as pulmonary gas exchange, much of the time.
C. Mixing of blood from the lungs with blood from the body in the ventricle is not a problem. Loss of the partial ventricular septum is not a problem because the spiral valve keeps systemic and pulmonary blood separate within the ventricle.
D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.
E. The slightly asynchronous contraction of left and right atria help keep systemic and pulmonary circuit blood separated in the ventricle.
Answer:
D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.
Explanation:
The conus arteriosus plays an important role in directing blood into the correct arterial arches in amphibian which keeps oxygenated and nonoxygenated blood separate from one another. The Conus arteriosus of the amphibian heart receives blood from the right atrium chamber of heart and passes the blood on to the pulmonary circulation which keeps oxygenated and nonoxygenated blood separate from each other and there is no need for partial ventricular septum.
Leucine biosynthesis occurs in a multistep pathway starting from 2-oxovalerate, and the final product of the pathway (leucine) inhibits the first enzyme involved in the biosynthetic pathway through a process called feedback inhibition. This enzyme inhibition occurs, regardless of whether or not the 2-oxovalerate substrate is bound in the active site of the enzyme. Describe what type of inhibitor leucine is and justify your response.
Answer:
it is a type of mixed inhibition referred to as 'non-competitive inhibition'
Explanation:
Mixed inhibition occurs when an inhibitor binds to the enzyme in a site different from the active site where the substrate binds (i.e., the allosteric site). The term 'mixed' is because this inhibition is a mixture of competitive inhibition, where the inhibitor competes with a substrate to bind to the enzyme, and uncompetitive inhibition, where the inhibitor binds only to the complex formed between the enzyme and its substrate. In competitive inhibition, the maximal velocity of the reaction (Vmax) does not change, whereas the apparent Km (i.e., the concentration of substrate which permits the enzyme to achieve half Vmax) increases. Moreover, in non-competitive inhibition, the Km does not change, whereas the Vmax decreases. Non-competitive inhibition is a special type of mixed inhibition where the apparent Vmax (V app-max) is reduced, while the Km of the enzyme is unaffected.
4. Fungi have two modes of reproduction, creating offspring either sexually or asexually. Hov does a fungus carry out asexual reproduction?
a. By producing sperm and egg cells
b. By producing spores
C. By cloning an entire organism
d. By dividing in half to create two separate organisms
Answer: b. By producing spores
Explanation:
A hypotonic solution has a lower concentration of solutes than a blood cell. Explain what
happens when a blood cell is placed in a hypotonic solution.
The blood cell swells with water there by bursting.
Two parents, both heterozygous (Tt) and tall, are
crossed to produce offspring. What are the possible
genotypes and phenotypes of the offspring?
Answer:
1:2:1 is the ratio
Explanation:
well if you draw a punnet square you will get TT Tt Tt tt
Answer:
1:2:1 is the ratio
Explanation:
may we please hel me
Answer: 17. epiglotti. 18. Salt. 19. 37 degrees celsius. brainliest??
Explanation:
Please help!
We spent quite a bit of time discussion the various types of vaccines available this week, and how each of them compare and contrast with each other. However, ALL vaccines have a common purpose, regardless of how they aim to accomplish it. In YOUR OWN WORDS, tell me what that common purpose is. This is a short answer question and should be answered in a sentence or two, maybe three at the most.
Answer:
All vaccines work together to accomplish one main task and that is to prepare your body incase it gets invaded with a harmful virus that could cause you to get very sick. Vaccines are weak forms of the virus that are injected into humans so that the body can start creating the right antibodies to defend the body against the harmful virus.
I hope this helps! :)
The frequencies of the color trait among rabbits living in a mountainous area have changed over time. What type of selection most likely occurred?
a. directional
b. disruptive
c. stabilizing
d. sexual
Question:
The frequencies of the color trait among rabbits living in a mountainous area have changed over time. What type of selection most likely occurred?
a. directional
b. disruptive
c. stabilizing
d. sexual
My answer/thought:
I believe your answer is C. stabilizing. :)
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Hope this helps! if not, correct me. :) if it is, brainliest is appreciated to get to virtuoso
--siveth
Rewrite as a simplified fraction. 1.5¯ = ?
Answer: 1 1/2
Explanation:
3 alternative energy sources
sun, wind, atomic energy
sun, wind , rain
coal, oil, gas
atomic energy, coal, wind
Which cell has the largest problems due to surface area limitations
Answer:
Terms in this set (217) Thinking about the surface of cells, which of these cells has the largest problems due to surface area limitations? Eukaryotic cells are 10-100 times the size of prokaryotic cells.
hiw has human trafficking displayed itself in communities.
Explanation:
Human trafficking is causing a serious threat.It is the trade of humans,most commonly for the purpose of sexual slavery,forced labour or commercial sexual exploitation for the trafficker or others.The business is started with foreign employment,marriage,travelling to beautiful cities etc and such illiterate and poor people are lured by them.Thus,it has displaced a negative impact and a questioning glance to the people about human kind and humanity.
HELP ME PLEASE!!!!!!
Answer:
C of course
Explanation:
How does a medicine like Benadryl (a medicine taken to suppress allergy symptoms) affect the immune system?
what are two different events that occur during metaphase?
Answer:
The next two major events that take place in mitosis are the alignment of chromosomes at the center of the cell and the subsequent separation of sister chromatids to opposite mitotic spindle poles. These two events occur in metaphase and anaphase, respectively.
Explanation:
Which mammal is not a marsupial?
anteater
kangaroo
opossum
wallaby
6. Define allele, please help me out
Answer:
allele is the pair of gene controlling the pair of contrasting characteristics
Answer:
each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
hope this answer helps you!
5. Radioisotopes
Radioisotopes are isotopes that are radioactive—they spontaneously emit energy (or radiation) when their nucleus breaks down. The term for this process is radioactive decay. When the process involves a change in the number of protons in the nucleus, the atom can change into another element. In one type of radioactive decay, a neutron in the nucleus splits into a proton and an electron. This split decreases the number of neutrons by one and increases the number of protons by one, but since protons and neutrons have approximately the same mass, the mass number stays the same. Since the number of protons changes, the atom becomes a new element.
Carbon-14 has 8 neutrons and 6 protons. When this radioisotope undergoes the radioactive decay process discussed above, it becomes nitrogen-14.
The number of protons in nitrogen-14 is?
Answer:
7
Explanation:
The number of proton becomes 7 in nitrogen- 14 because there is one proton increase in the nucleus as a result of radioactive decay. There are 6 number of protons and 8 number of neutron in the nucleus of carbon-14 isotope. when the radioactive decay occurs, there is decrease occur in neutron number by removing one neutron and number of proton increases in the nucleus due to addition of one proton so that's we can say that the number of proton in nitrogen-14 is 7.
how does energy drive the cycling of matter through different geological processes?
Answer:
Here is the link to answer
Explanation:
bit. ly/3a8Nt8n
[20 POINTS!!!!!]
which scenario would lead to the biggest increase in rabbit population?
increase in food supply and decrease in predators.
increase in food supply and predators.
decrease in food supply and increase in predators.
decrease in food supply and predators.
The scenario that would lead to the greatest increase in the rabbit population is increased food supply and decreased predators.
What are predatory animals?Predatory animals are animals that feed on other animals. They occupy the top of the food chain and are therefore found in smaller numbers. Predators are usually large, agile and adapted for hunting. A good predator is not known just by its size.
With this information, we can conclude that the scenario that would lead to the greatest increase in the rabbit population is increased food supply and decreased predators.
Learn more about Predatory in brainly.com/question/12751629
Main idea: In a solar eclipse the moon blocks out the sun.
Which of the following details supports the main idea?
A.
A solar eclipse is magnificent.
B.
The atmosphere of the sun is called the corona.
C.
The moon casts a shadow on the earth.
D.
The moon casts a shadow on the sun.
3) Write 3 sentences that explain how limiting factors can change the carrying capacity of
an ecosystem? (hint think in terms of a food web)
Answer:
Explanation:
human activities should no be more than the capacity of ecosystem
we should pay attention to carrying capacity of eco system
another one i don't no sorry for that
hope you like my answer and hope it helps you
Which is transported in the xylem of a plant?
A. Dead material
B. Nutrients
C. Chloroplast
D. Blastocysts
Answer:
B. Nutrients
Hope this helped! :)
At rest the lens of the eye will be more round when the ciliary muscles are contracted true or false
Answer:
True.
Explanation:
Yes, the lens of the eye will be more spherical when the ciliary muscles are contracted due to tension. When the relaxation occurs in the ciliary muscle , the zonular tension is increased, that causes the lens to be flatten and leads to decrease in optical power while on the other hand, when the ciliary muscle contracts, the tension in the equatorial zonular is increased which causes the central lens surface to become more rounded that leads to increases central optical power.
Janine’s hands are larger than her father’s hands. Which explanation can account for the difference in hand size between father and daughter?
Janine’s large hands may be the result of a genetic mutation.
B
Janine inherited her mother’s hand size.
C
The difference in hand size may be due to an environmental cause.
D
Though some of the above are more likely than others, all of the above are possible explanations.
Answer:
D or b
Explanation:
Choose between those
Hi can you help please help me with this
Answer: D someone running at a constant speed and direction
Explanation:
1. Would the pollution problems caused by cars and trucks be completely solved if they all became electrically powered overnight?
2. Name one challenge we need to overcome by using solar panels
Answer:
1.This doesn't help COMPLETELY get rid of pollution. It might help lessen the pollution, but it definitely won't solve it, because there are also other things that cause pollution.
2.The main problem with solar power that has stifled its use is the fact that energy production only takes place when the sun is shining. And it won't be beneficial to the countries that aren't really close to the equator ( the middle east) and that might be a problem cause there just might not be enough energy/electricity.
Proteins are made in organelles called _____.
ribosomes
Golgi bodies
DNA
chloroplasts
Answer:
Ribosome
Ribosome: a cellular organelle that is responsible for making proteins
Cilia are involved in the transfer The genetic information from one bacterial cell to another
Answer:
False.
Explanation:
No, Cilia are not involved in the transfer of the genetic material from one bacterial cell to another. The pili are the structure which is responsible for the transfer of genetic material from one bacteria to another. This transfer can only occur for those types of bacteria that possess a special plasmid that is responsible for the formation of pilus which leads to the transfer of genetic material. If the special plasmid is not present so there will be no tranfer of genetic material from one bacteria to another.
Principales of Biotechnology
What are the units you guys have? I want to study them
Some units includes Tools and Processes of Recombinant Technology which consists of many topics of DNA, ligase, PCR.
If you are interested in learning about the Principles of Biotech, you could get a headstart on khan academy. It'll help you prepare.