The sex of birds,some insects,and other organisms is determined by a ZW chromosomal arrangement in which the males have like sex chromosomes ZZ and females are ZW similar to XY in humans .Assume that a recessive lethal allele on the Z chromosome causes death of an embryo in birds.What sex ratio would result in the offspring if a cross were made between a male heterozygous for the lethal allele and a normal female?
A)1:2 male to female B)4:1 male to female C)3:1 male to female D)2:1 male to female E)1:1 male to female