Genomic imprinting leads to non-Mendelian inheritance because in genomic imprinting
a. the allele pairs controlling a trait do not assort independently.
b. the expression of an allele varies depending on which parent it was inherited from.
c. the alleles at one gene locus hide or prevent the expression of alleles at a second gene locus.
d. the expression of an allele varies depending on whether the individual is homozygous or heterozygous.
e. the expression of an allele varies depending on whether the individual is male or female.