Question:

In tracking the white gene in Drosophila that was discussed

Last updated: 7/8/2022

In tracking the white gene in Drosophila that was discussed

In tracking the white gene in Drosophila that was discussed in class, a true-breeding white-eyed female fly is crossed to a red-eyed male fly. If a single nondisjunction event of the sex-chromosomes occurs in meiosis I in this red-eyed male fly, what is the genotype and phenotype of an exceptional progeny (one with an abnormal number of sex-chromosomes) that could result from this nondisjunction event? (O = no sex chromosome) A) X^w/X^w/Y white-eyed female B) X^w/X^w+/Y red-eyed female C) X^w/O white-eyed female D) X^w+/O red-eyed male E) X^w+/Y red-eyed male