Table 2.

Possible IBD Distributions (f₀,f₁,f₂) and Their Probabilities at a Marker Locus with r Equifrequent Alleles

	Probability
IBDDistribution	No Linkagea	Dominant Modelb	Recessive Modelb
(1,0,0)
(0,1,0)
(0,0,1)

^aDisplays the probability of an ASP for a specific IBD distribution at an unlinked autosomal genetic marker—that is, θ=0.5.

^bThe probability of an ASP for a specific IBD distribution at a linked genetic marker with θ=0 for an autosomal dominant disease (dominant model) or a recessive disease (recessive model) with complete penetrance and a diallelic trait locus with minor-allele frequency p. Both loci are in Hardy-Weinberg equilibrium, and there is no linkage disequilibrium between the loci.