How many "new" polymorphisms?
G= generations of exponential population growth = 5000
N'= population size = 6 x 109 now; N= 104 pre-G
m= mutation rate per bp per generation = 10-8 to 10-9 (ref)
L= diploid genome = 6 x 109 bp
Av # new mutations < S Lektm = 4 x 103 to 4 x 104
Take home: "High genomic deleterious mutation rates in hominids"
accumulate over 5000 generations & confound linkage methods
And common (causative) allele assumptions.