In a population of 1000 lemmings there are two alleles for skin colour, the dominant colour being cream (C) and the recessive being white (c). 350 individuals have white skin. Use Hardy-Weinberg to predict the number of homozygous recessive individuals.

Hardy-Weinberg Principle states that in a population of randomly mating individuals:
p + q = 1
p2+2pq+q2=1
White fur = homozygous recessive = q2 = 350/100 = 0.35
Therefore q = sqrt(0.35)=0.59 (2sf)p = 1-0.59 = 0.41 (2sf)
Homozygous dominant = p2 = (0.41)2 = 0.1668
No. homozygous dominant lemmings = 0.1668 x 1000 = 167 lemmings

IO
Answered by Igbunu O. Biology tutor

2293 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How does the structure of glycogen relate to its function?


Explain the process of muscle contraction in a myofibril following nervous stimulation.


Give three differences between the structures of RNA and DNA


Describe how ACh transmits nerve impulses across Cholinergic Synapse


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences