Question

What might account for the unusual results you obtained in the experiment in Part C? Select the two correct answers. Select the two correct answers. The unusual F1 female is heterozygous for an inversion involving the chromosome with the apricot, bristle and clipped loci. The unusual F1 female is heterozygous for a reciprocal balanced translocation involving the chromosome with the apricot, bristle and clipped loci. Crossing over within an inversion loop in the F1 female led to the 90 eggs that aborted development. Independent assortment of non-compatible chromosome structures (i.e., translocated and normal chromosomes segregating together) in the F1 female led to the 90 eggs that aborted development.

Answer 1

Answer:

The correct options are B "The unusual F1 female is heterozygous for a reciprocal balanced translocation involving the chromosome with the apricot, bristle and clipped loci" and D "Independent assortment of non-compatible chromosome structures (i.e., translocated and normal chromosomes segregating together) in the F1 female led to the 90 eggs that aborted development"

Explanation:

The unexpected results obtained earlier can be attributed to the two factors listed above. At the time when meisois takes place, there is the process of independent assortment which leads to formation of zygotes. Due to the event of translocation, the eggs produced lacked some critical development genes.