From: Effect of family relatedness on characteristics of estimated IBD probabilities in relation to precision of QTL estimates
N
t
m
Fx
cov(IBS, IBD)
10
12
0.5
0.45
0.105
0.1
0.038
15
17
0.43
0.100
0.036
20
21
0.41
0.096
0.034
50
37
0.31
0.074
0.026