In drosophila, an autosomal gene determines the shape of the hair, with b giving straight and b giving bent hairs. on another autosome, there is a gene of which a dominant allele i inhibits hair formation so that the fly is hairless (i has no known phenotypic effect). a. if a straight-haired fly from a pure line is crossed with a fly from a pure-breeding hairless line known to be an inhibited bent genotype, what will the genotypes and phenotypes of the
f1
and the
f2
be? b. what cross would give the ratio 4 hairless : 3 straight : 1 bent?