Albinism, an autosomal recessive trait characterized by an absenc...

Question

Albinism, an autosomal recessive trait characterized by an absence of skin pigmentation, is found in 1 in 4000 people in populations at equilibrium. Brachydactyly, an autosomal dominant trait producing shortened fingers and toes, is found in 1 in 6000 people in populations at equilibrium. For each of these traits, calculate the frequency of

the dominant allele at the locus

Accepted Answer

Hey, everyone. Let's take a look at this question together. Brachy Doyle is an autosomal dominant trait found in one out of 6000 people in the population at equilibrium. Which of the following options gives the correct estimate of the frequency of the dominant allele at the locust. Is it answer choice? A 0.13% answer choice B 1.38% answer choice C 2.4124% or answer choice D 5.222%. Let's work this problem out together to try to figure out what the frequency is for the dominant allele at the locus. So we know that in Hardy Weinberg equilibrium, we have the formula B squared plus two B Q plus Q squared equals one where P squared is equal to the frequency of homozygous dominant individual. Two P Q is the frequency of heterozygous individuals. And Q squared is the frequency of homozygous recessive individuals. And since Brachy Doyle is an autism dominant trait, we are looking at P squared and it is found in one out of people. So P squared is equal to one divided by 6000. And we're trying to find the value for P which can be calculated as the square root of one divided by 6000, which when calculated the value four P is equal to 0.13. So that means that answer choice. A 0.13% is the correct answer. Since the frequency of the dominant allele is equal to 0.13, which is answer choice. A I hope you found this video to be helpful. Thank you and goodbye.

My Courses

Chemistry

Biology

Math

Physics

Business

Social Sciences

Programming

Product & Marketing