A gene has four alleles, A1, A2, A3, and A4. The alleles occur in a population...
A gene has four alleles, A1, A2, A3, and A4. The alleles occur in a population at the following frequencies: A1=0.2, A2=0.1, A3=0.4, A4=0.3. Compute the following:
a) Probability that a single allele chosen at random is either A1 or A4
b) Probability than an individual as two A1 alleles
c) Probability that an individual has one A1 and one A3 allele
d) Probability that an individual is NOT A1A1
e) Probability that if we drew two individuals at random, neither would be A1A1
f) Probability that if we drew two individuals at random, at least one would be A1A1
g) Probability that three randomly chosen individuals would have no A2 or A3 alleles
Homework Answers
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A gene has four alleles, A1, A2,
A3, and A4. The alleles occur in a population...
Assume that the allele frequencies of alleles A1 and A2 were 0.2 and 0.8 in one...
Assume that the allele frequencies of alleles A1 and A2 were 0.2
and 0.8 in one subpopulation and 0.4 and 0.6 in another
subpopulation. Assuming that there are Hardy-Weinberg proportions
within each subpopulation and that the subpopulations are of equal
size, what would be the observed heterozygosity if these
populations were lumped? How does this compare to what would be
expected if there were one random-mating population?? Calculate the
same values for the three heterozygotes when the subpopulations had
frequencies...
Suppose that a single gene in a population has three alleles, or variants, A1, A2, and...
Suppose that a single gene in a population has three alleles, or variants, A1, A2, and A3. In a mating pair of birds, the male has alleles Aį and A2, and the female has alleles A and A3. AA2 А.Аз What is the probability that A3 will be passed to any offspring? probability probability
Question: What is the expected heterozygosity of a population at locus A, where there are three...
Question: What is the expected heterozygosity of a population at locus A, where there are three alleles of A (A1, A2, and A3) with frequencies p=0.3, q=0.3, and r=0.4, respectively? o Question: What is the expected heterozygosity of a population at locus A, where there are 2 alleles of A (A1, A2) with frequencies p=0.6 and q=0.4, respectively? o Question: What is the expected heterozygosity of a population at locus A, where there are four alleles of A (A1, A2,...
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...
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)
4. Say we have a population, with Ne = 100, containing two alleles, A1 and A2...
4. Say we have a population, with Ne = 100, containing two alleles, A1 and A2 at frequencies 0.6 and 0.4, respectively. We leave this population alone for 10000 generations (keeping its size constant), then come back to find that the allele frequencies are still 0.6 and 0.4. a) Explain why this would be evidence that selection is acting in this population. b) Which genotype would you expect to have the highest fitness in this case? Explain.
3. Consider two loci. One locus has two alleles, A1 and A2 at frequencies p =...
3. Consider two loci. One locus has two alleles, A1 and A2 at frequencies p = 0.3 and q = 0.7, respectively, and the other locus has two alleles, B1 and B2 at frequencies r = 0.4 and s = 0.6. (A) What are the possible genotypes of gametes made by organisms in this population? (B) What will be the frequencies of gametes produced by individuals in this population if the two loci are in gametic equilibrium (meaning that they...
12.1 A discrete memoryless source has an alphabet {a1, a2, a3, a4, а5, ac) with corre-...
12.1 A discrete memoryless source has an alphabet {a1, a2, a3, a4, а5, ac) with corre- 0.1, 0.2, 0.3,0.05,0.15, 022). Find the entropy of this source sponding probabilities ( Compare this entropy with the entropy of a uniformly distributed source with the same alphabet.
A mainland population of 1000 blue iguanas have the neutral alleles A1 and A2 with frequencies...
A mainland population of 1000 blue iguanas have the neutral alleles A1 and A2 with frequencies of A1 = 0.50 and A2 = 0.50. A new population of blue iguanas is founded on Lizard Island with a population size of 10 males and 15 females. The neutral alleles A1 and A2 are present in the population with frequencies of A1 = 0.30 and A2 = 0.70. Migrants begin moving from the mainland to Lizard Island at a rate of 1...
You are studying the process of one-way migration from a mainland population to an island population....
You are studying the process of one-way migration from a mainland population to an island population. You've collected data on the frequency of two alleles- A1 and A2- in each population as shown below. Population A1 A2 Mainland 0.50 0.50 Island 1.0 0 a. You find that individuals from the mainland population migrate to the island population and that the migration rate (m) is equal to 0.8. What will the allele frequencies be in the new population after gene flow...
Assume that the allele frequencies of alleles A1 and A2 were 0.2
and 0.8 in one subpopulation and 0.4 and 0.6 in another
subpopulation. Assuming that there are Hardy-Weinberg proportions
within each subpopulation and that the subpopulations are of equal
size, what would be the observed heterozygosity if these
populations were lumped? How does this compare to what would be
expected if there were one random-mating population?? Calculate the
same values for the three heterozygotes when the subpopulations had
frequencies...
Suppose that a single gene in a population has three alleles, or variants, A1, A2, and A3. In a mating pair of birds, the male has alleles Aį and A2, and the female has alleles A and A3. AA2 А.Аз What is the probability that A3 will be passed to any offspring? probability probability
Question: What is the expected heterozygosity of a population at locus A, where there are three alleles of A (A1, A2, and A3) with frequencies p=0.3, q=0.3, and r=0.4, respectively? o Question: What is the expected heterozygosity of a population at locus A, where there are 2 alleles of A (A1, A2) with frequencies p=0.6 and q=0.4, respectively? o Question: What is the expected heterozygosity of a population at locus A, where there are four alleles of A (A1, A2,...
3. Consider two loci. One locus has two alleles, A1 and A2 at frequencies p = 0.3 and q = 0.7, respectively, and the other locus has two alleles, B1 and B2 at frequencies r = 0.4 and s = 0.6. (A) What are the possible genotypes of gametes made by organisms in this population? (B) What will be the frequencies of gametes produced by individuals in this population if the two loci are in gametic equilibrium (meaning that they...
12.1 A discrete memoryless source has an alphabet {a1, a2, a3, a4, а5, ac) with corre- 0.1, 0.2, 0.3,0.05,0.15, 022). Find the entropy of this source sponding probabilities ( Compare this entropy with the entropy of a uniformly distributed source with the same alphabet.
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