Topic 9: Population Subdivision and Gene Flow (pt. 1)

Question 1

metapopulation

Answer 1

a large population composed of two or more partially (or completely) isolated demes, such that mating within metapopulation is not random

Question 2

subpopulation or deme

Answer 2

groups of individuals that mate randomly with each other in the absence of inbreeding and assortative mating

Question 3

Wahlund Effect

Answer 3

perception of a heterozygote deficit caused by treating two different subpopulations as a single population

Question 4

how does population subdivision affect F in the metapopulation?

Answer 4

population subdivision increases F in metapopulation (think earthworm example)

Question 5

when is F(ST) = 0? when is F(ST) = 1?

Answer 5

F(ST) = 0 when all subpopulations have identical allele frequencies

F(ST) = 1 when all subpopulations are fixed for different alleles