Table 3.

Fitness scheme for loci under selection.

Genotype at Locus i	Fitness Contribution of Locus in Deme 1	Fitness Contribution of Locus in Deme 2
$A_i{A}_i$	$1+s_i$	1
$A_i{B}_i$	$1+0.5s_i$	$1+0.5s_i$
$B_i{B}_i$	1	$1+s_i$