We're considering a fully recessive, deleterious (harmful) mutation (A2) at an allele frequency of q =...
We're considering a fully recessive, deleterious (harmful) mutation (A2) at an allele frequency of q = 0.01 (one percent) in a large outbreeding population. Thus p(A1) = 0.99.
1. What is the population frequency of A2A2 homozygotes?
2. What is the population frequency of A1A2 heterozygotes?
3. Of all the A2 alleles in the population, what proportion are in heterozygotes?
4. And what proportion are in homozygotes?
5. Now, your country starts a policy of sterilizing all the affected individuals (the A2A2 homozygotes). Next generation, what is expected frequency of the A2 allele (q')?
6. After this enormous and highly unpopular effort, what fraction of the original A2 alleles are still present in the population? (This is q'/q.)
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We're considering a fully recessive, deleterious (harmful)
mutation (A2) at an allele frequency of
q =...
1. We're considering a fully recessive, deleterious (harmful) mutation (A2) at an allele frequency of q...
1. We're considering a fully recessive, deleterious (harmful) mutation (A2) at an allele frequency of q = 0.01 (one percent) in a large outbreeding population. Thus p(A1) = 0.99.1. What is the population frequency of A2A2 homozygotes? 2. What is the population frequency of A1A2 heterozygotes? 3. Of all the A2 alleles in the population, what proportion are in heterozygotes? 4. And what proportion are in homozygotes? 5. Now, your country starts a policy of sterilizing all the affected individuals...
Question 2: In an outbreeding diploid population, an autosomal locus has two alleles, A1 and A2....
Question 2: In an outbreeding diploid population, an autosomal locus has two alleles, A1 and A2. You observe the allele frequencies of A1 and A2 are both equal to 0.5, and the relative fitnesses of the three genotypes (A1A1, A1A2, and A2A2) are equal to 2, 1.5, and 1, respectively. A) Which allele will become fixed in this population? (1 point) **The recessive beneficial allele A2A2 will eventually become fixed in the population (A2A2=1) B) What is the allele frequency...
If the genotypes A1A1, A1A2, and A2A2 have frequencies 0.5, 0.25, and 0.25 respectively, what are...
If the genotypes A1A1, A1A2, and A2A2 have frequencies 0.5, 0.25, and 0.25 respectively, what are the frequencies of the A1 and A2 alleles? b) After a single generation of random mating, what are the expected frequency of A1A1, A1A2 and A2A2 in the offspring? c) If A2 is a recessive allele causing freckles, how many freckled offspring do you expect if there are 441 offspring in total?
In a population of mice, there are two alleles of the A locus (A1 and A2)....
In a population of mice, there are two alleles of the A locus (A1 and A2). Tests showed that in this population there are 300 mice of genotype A1A1, 200 of A1A2 and 250 of A2A2. What is the frequency of the A2 allele in the population? (enter as decimal- with zero & rounded to nearest hundredth)
In a hypothetical population which is in Hardy Weinberg equilibrium, the frequency for a recessive allele...
In a hypothetical population which is in Hardy Weinberg equilibrium, the frequency for a recessive allele is 30%. What percentage of the population would be expected to show the dominant trait in the next generation? Humans who are born homozygous for the recessive sickle cell allele die of sickle cell anemia, while those who are heterozygous are resistant to malaria (see chapter 4 for more information on this balanced polymorphism). 4% of the population of the Congo are homozygous recessive for...
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In a population of mice a particular locus has two alleles A1 (dominant) and A2 (recessive). There are 126 A1A1, 167 A1A2 and 88 A2A2. Is this population in Hardy-Weinberg equilibrium (3 pts)? In a population of Gragons, there are 3151 A1A1, 1678 A1A2 and 2014 A2A2 individuals. If the environment changes so that the homozygous recessive genotype suffers a reduction of fitness where its fitness is now 0.73, but the other genotypes are unaffected, what will be the frequency...
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...
2. Which of the following correctly describes how inbreeding will affect genotype and allele frequencies in...
2. Which of the following correctly describes how inbreeding will affect genotype and allele frequencies in Hardy-Weinberg populations? Genotype and allele frequencies will be unaffected. The frequency of heterozygotes will decrease, but allele frequencies will be unaffected. The frequency of homozygotes will increase, and deleterious alleles will decrease. Beneficial alleles will increase in frequency, as well as the genotypes containing those alleles. Genotype frequencies will return to H-W expectations after 1 generation of random mating. 3. Consider a population with...
p is the frequency of a new mutation: -i.e. In a population containing only allele A2,...
p is the frequency of a new mutation: -i.e. In a population containing only allele A2, an allele mutates into allele A1 Question: A single mutant allele A2 would start at p=0.1 in a population with ____ (how many) individuals? A.) 10 B.) 5 C.) 20
If selection favours the dominant allele and mutation is creating recessive alleles at a rate of...
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2. Which of the following correctly describes how inbreeding will affect genotype and allele frequencies in Hardy-Weinberg populations? Genotype and allele frequencies will be unaffected. The frequency of heterozygotes will decrease, but allele frequencies will be unaffected. The frequency of homozygotes will increase, and deleterious alleles will decrease. Beneficial alleles will increase in frequency, as well as the genotypes containing those alleles. Genotype frequencies will return to H-W expectations after 1 generation of random mating. 3. Consider a population with...
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