In birds,sex is determined by a ZW chromosome scheme.Males are ZZ and females are ZW.A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons.What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?
A)2:1 male to female B)1:2 male to female C)1:1 male to female D)4:3 male to female E)3:1 male to female