In drosophila ,vestigial (vg) wings and reduced (rd) bristles are both recessive mutations in drosophila. vg and rd are both found on chromosome 2, which is depicted in the map below. a female from a homozygous strain of vestigial flies was crossed with a male from a homozygous strain of reduced bristle flies. the f1 hybrids were phenotypically wild-type (long wings and normal bristles). if a female f1 fly is mated with a vestigial male having reduced bristles, what proportion of the progeny would have long wings and normal bristles?