The allele y occurs with a frequency of 0.8 in a population of clams. Give the frequencies of the genotypes YY, Yy and yy.

To do this we use the Hardy-weinburg equation.p2+2pq+q2=1frequency of y = q, frequency of Y=pFirst we work out the frequency of Y(p)p+q=11-0.8=0.2p=0.2Then we plug our p and q values into the equation to find the frequency of our phenotypes.p2=0.042pq=0.32q2=0.64We can check our answers by adding them up to see if they make 10.04+0.32+0.64=1Frequency of genotype YY=0.04, Yy=0.32, yy=0.64

Answered by Biology tutor

6220 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the process that converts a genetic sequence on messenger RNA into the primary sequence of a protein


What is the difference between diffusion, osmosis and active transport?


In mutations, what are the possible ways in which the DNA can be modified to make the proteins from which it is produced, non-functional or inactivated?


What is protein Structure


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning