The genes for light eyes ( lt; light) and straw bristles ( stw; straw) are tightly linked on chromosome ii in drosophila melanogaster. the malpighian tubes of lt larvae and adults are maternally affected in that malpighian tubes of lt/lt organisms, whose mothers were lt+/lt and have more yellow pigment than those from lt/lt mothers. there is no maternal effect associated with the straw locus. give the phenotypes of the offspring from the following crosses. cross #1: lt stw/lt stw; lt+stw+/lt stw
cross #2: lt+ stw/lt stw; lt stw+/lt stw
cross #3: lt+ stw/lt stw; lt stw/lt stw