lecture 11- genetic drift and variation

Question 1

what is heterozygosity always between

Answer 1

0 and 1

Question 2

decay in heterozygosity?

Answer 2

§ Ho= the initial heterozygosity in generations when t=0
§ Decay in heterozygosity is faster when pop size is smaller
§ As t goes up, heterozygosity goes down until it reaches 0
The loss of H due to genetic drift is similar to the loss of H and increase in homozygosity seen in inbreeding

Question 3

describe infinite alleles model

Answer 3

• Balance between mutation and drift - always a balance
  
  • When drift is lessened, mutations will compensate for the loss of variation