Question

Which phenotypic and genotype ratios are likely to occur in testcrosses when dealing with a single...

Which phenotypic and genotype ratios are likely to occur in testcrosses when dealing with a single gene pair? (answers given as phenotypic. genotypic)

a.

9:3:3:1. 1:2:1:2:4:2:1:2:1
b.

1:1 1:1
c.

9:3:3:1. 1:1:1:1
d.

3:1 1:2:1
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