Problem: In house cats, the presence of black splotches is coded for by a dominant allele S; the recessive allele s codes for no black splotches. In a very large feral house cat population, you find that 5/9 of the cats have black splotches.A. Assuming random mating, no natural selection on black splotches, and no mutation or gene flow, what proportion of the cats in the population are heterozygous at the S locus?B. What will be the frequency of the dominant allele S in the following generation?
FREE Expert Solution
The relative frequency of cats with homozygous recessive trait, ss, is 0.44.
Assuming the sample follows Hardy-Weinberg equilibrium, p2 + 2pq + q2 = 1, the value for q2 is 0.44. The value of q, therefore, is 0.67 (the square root of 0.44). And since p + q = 1, the value of p would be 0.33.
Problem Details
In house cats, the presence of black splotches is coded for by a dominant allele S; the recessive allele s codes for no black splotches. In a very large feral house cat population, you find that 5/9 of the cats have black splotches.
A. Assuming random mating, no natural selection on black splotches, and no mutation or gene flow, what proportion of the cats in the population are heterozygous at the S locus?
B. What will be the frequency of the dominant allele S in the following generation?
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Hardy-Weinberg Model concept. You can view video lessons to learn Hardy-Weinberg Model. Or if you need more Hardy-Weinberg Model practice, you can also practice Hardy-Weinberg Model practice problems.