A Maternal Effect Mutation Bicoid (Bcd)is Recessive

question 12

Essay

A maternal effect mutation bicoid (bcd)is recessive.The bcd allele makes no Bicoid protein.In the absence of the Bicoid protein,product embryogenesis is not completed and eggs fail to hatch into viable larva.Consider a cross between a female who is heterozygous (bcd^+/bcd)and a homozygous mutant male (bcd/bcd).
a.How is it possible for a male homozygous for the mutation to exist?
b.Predict the outcome (normal and/or failed embryogenesis)in the F₁ and F₂ generations resulting from this cross.

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