
how do you figure out genotypes of a black and a white butterfly that produce black, white and grey offspring?
For the following problem draw a punnet square and then indicate parental genotypes, phenotpye ratio, genotypic ratio, and type of allele interaction for the F1 generation in each problem:
A black moth crossed with a white moth (P generation) produces some offspring that are black, some tha tare white, and others that are gray in the F1 generation.
Please check again of your last sentence. I believe the progeny in F1 are all grey, and in F2 they are black, grey and white. This is an example of incomplete (semi) dominance.
B: alelle for black
b: allele for white
B is incomplete dominant over white (Bb will be grey)
P: BB (black) x bb (white)
F1: Bb (all grey) --> the type of allele interaction is incomplete (semi) dominance)
Gamete in F1: B and b
F2: 1/4 BB (black) : 1/2 Bb (grey) : 1/4 bb (white)
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