Population bottlenecks

Population size

Time

bottleneck

H = 1 - 1 = expected proportion of Ho retained after a

2Ne 1-generation bottleneck

Ht = Ho 1 - 1 t = proportion of Ho retained t generations after

2Ne a bottleneck

if Ne = 4 at t=0, then Ht=1 = 1 - 1 = 7 i.e. 1/8 of original H

2 x 4 8 was lost in 1

generation

61A