Why does it take so long for a new recessive beneficial allele to go to fixation...
Why does it take so long for a new recessive beneficial allele to go to fixation in a population?
Homework Answers
Recessive allele take place long time to go to fixation in population because dominant alles show thier effcets more effectively compared to recessive ones even though recessive alleles are benefecial but dominant ones can mask the recessive allels effect. by competeing with dominant alleles benefecial recessive alleles take mean while time to express thier effects in a group of population because dominant alleles can supress and mask the recssive gene effects.
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Why does it take so long for a new recessive beneficial allele
to go to fixation...
Question 3: Explain why the fixation time of a beneficial, recessive allele is often much longer...
Question 3: Explain why the fixation time of a beneficial, recessive allele is often much longer than that of a beneficial, dominant allele. (2 points) Question 4: Name two types of natural selection that can maintain polymorphism. (2 points) Question 5: Consider an annual plant population in an environment with alternating dry and wet years. You observe the dry and wet years are equally frequent. At a locus with two alleles (A1 and A2), the relative fitnesses of the three...
If a newly arisen allele is beneficial, do you think this will have an effect on...
If a newly arisen allele is beneficial, do you think this will have an effect on the probability that this allele will get fixed in the population? What if the allele is detrimental? Does drift or selection have a greater effect on the probability of fixation or loss of an allele, and what information would you need in order to determine this?
Explain why the each like has that shape. a. A1 is beneficial and recessive. b. A1...
Explain why the each like has that shape.
a. A1 is beneficial and recessive.
b. A1 is beneficial and dominant.
c. A1 is beneficial and codominant.
Frequency of Allele A1 Generation
Which allele is most likely to go to fixation first: A. Favored allele with a starting...
Which allele is most likely to go to fixation first: A. Favored allele with a starting allele frequency of 0.3 that exhibits incomplete dominance B. Favored allele with a starting allele frequency of 0.1 that exhibits incomplete dominance C. Favored allele with a starting allele frequency of 0.1 is the dominant allele D. Favored allele with a starting allele frequency of 0.3 that is the dominant allele E. Non-favored allele with starting allele frequency 0.4 that exhibits incomplete dominance i...
What tends to happen to new mutations that are: Deleterious [Select Neutral [Select] Slightly beneficial [Select]...
What tends to happen to new mutations that are: Deleterious [Select Neutral [Select] Slightly beneficial [Select] Highly beneficial [Select] [Select It tends to go extinct quickly It tends to go to fixation quickly It tends to go to fixation slowly If it doesn't go extinct quickly, it tends to go to fixation Next 1 Previous
Question 1: Antibiotics are effective against a population of bacteria. However, you observe a new resistance...
Question 1: Antibiotics are effective against a population of bacteria. However, you observe a new resistance allele arises in the bacteria population. You observe the fitness of the mutant is 1% higher than the wild type and the population size (N) of the bacteria is 106. A) How long does it take for the resistance allele to reach fixation? Hint: The fixation time is defined as the time from a single copy of the resistance allele (1/N) to near fixation...
The dominant allele of gene A encodes for long ears in rabbits whereas the recessive allele...
The dominant allele of gene A encodes for long ears in rabbits whereas the recessive allele encodes for short ears. The dominant allele for gene B encodes for pointy ear tips while the recessive encodes for round tips. Genes A and B are 70 map units apart. A rabbit with AB/ab genotype is test crossed. What phenotypic ratios do you expect to see in the F1? Select one: a. 3 long and pointy : 1 short and round b. 20...
The dominant allele of gene A encodes for long ears in rabbits whereas the recessive allele...
The dominant allele of gene A encodes for long ears in rabbits whereas the recessive allele encodes for short ears. The dominant allele for gene B encodes for pointy ear tips while the recessive encodes for round tips. Genes A and B are 70 map units apart. A rabbit with AB/ab genotype is test crossed. What phenotypic ratios do you expect to see in the F1? Select one: a. 9 long and pointy: 3 long and round : 3 short...
Why is nitrogen fixation so important? What organisms are capable of nitrogen fixation? Very briefly, (2-3...
Why is nitrogen fixation so important? What organisms are capable of nitrogen fixation? Very briefly, (2-3 sentences), how does it occur?
1. Fixation of Dominant Alleles Start with a population that has a gene with two alleles (A and a...
1. Fixation of Dominant Alleles Start with a population that has a gene with two alleles (A and a) with classical Mendelian dominance that are at equal frequency (p0.5. q 0.5). Assume this first generation is at hardy Weinberg equilibrium. Calculate the genotype frequencies AA- a. Aa b. Now assume some environmental change that makes the recessive phenotype completely unfit (fitness- 0). Calculate the allele frequencies and genotype frequencies in the second generation. (Hint: Your calculations might be easier if...
Explain why the each like has that shape.
a. A1 is beneficial and recessive.
b. A1 is beneficial and dominant.
c. A1 is beneficial and codominant.
Frequency of Allele A1 Generation
What tends to happen to new mutations that are: Deleterious [Select Neutral [Select] Slightly beneficial [Select] Highly beneficial [Select] [Select It tends to go extinct quickly It tends to go to fixation quickly It tends to go to fixation slowly If it doesn't go extinct quickly, it tends to go to fixation Next 1 Previous
Question 1: Antibiotics are effective against a population of bacteria. However, you observe a new resistance allele arises in the bacteria population. You observe the fitness of the mutant is 1% higher than the wild type and the population size (N) of the bacteria is 106. A) How long does it take for the resistance allele to reach fixation? Hint: The fixation time is defined as the time from a single copy of the resistance allele (1/N) to near fixation...
The dominant allele of gene A encodes for long ears in rabbits whereas the recessive allele encodes for short ears. The dominant allele for gene B encodes for pointy ear tips while the recessive encodes for round tips. Genes A and B are 70 map units apart. A rabbit with AB/ab genotype is test crossed. What phenotypic ratios do you expect to see in the F1? Select one: a. 3 long and pointy : 1 short and round b. 20...
The dominant allele of gene A encodes for long ears in rabbits whereas the recessive allele encodes for short ears. The dominant allele for gene B encodes for pointy ear tips while the recessive encodes for round tips. Genes A and B are 70 map units apart. A rabbit with AB/ab genotype is test crossed. What phenotypic ratios do you expect to see in the F1? Select one: a. 9 long and pointy: 3 long and round : 3 short...
1. Fixation of Dominant Alleles Start with a population that has a gene with two alleles (A and a) with classical Mendelian dominance that are at equal frequency (p0.5. q 0.5). Assume this first generation is at hardy Weinberg equilibrium. Calculate the genotype frequencies AA- a. Aa b. Now assume some environmental change that makes the recessive phenotype completely unfit (fitness- 0). Calculate the allele frequencies and genotype frequencies in the second generation. (Hint: Your calculations might be easier if...
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