Table 1.
Probability |
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Genotype | Mean | F2 | BCA | BCB | RIL |
AA | μ + α −δ/2 | ¼ | ½ | 0 | ½ |
AB | μ + δ/2 | ½ | ½ | ½ | 0 |
BB | μ − α −δ/2 | ¼ | 0 | ½ | ½ |
Variance attributable to locus |
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Model | Parameter | F2 | BCA | BCB | RIL |
General | ¼ δ2+ ½ α2 | ¼ (α + δ)2 | ¼ (α + δ)2 | α2 | |
No dominance | δ = 0 | ½ α2 | ¼ α2 | ¼ α2 | α2 |
A dominant | δ = α | 3/2 α2 | 0 | α2 | α2 |
B dominant | δ = −α | 3/2 α2 | α2 | 0 | α2 |
No additive | α = 0 | ¼ δ2 | ¼ δ2 | ¼ δ2 | 0 |
F2 = intercross; BCA = backcross to the A strain; BCB = backcross to the B strain; and RIL = recombinant inbred lines.