Chapter 18.4, Problem 38AQP

Summary Introduction

To explain:

The results when two different strains of Drosophila melanogaster are mated in reciprocal crosses: strain A is crossed with strain B females and progeny obtained are normal. When strain A is crossed with strain B males, many mutations and chromosome arrangement occurs in the gametes of F1 progeny and all are sterile.

Introduction:

Transposable elements are DNA sequences that are able to change their position in a genome sequence. It is also called jumping genes or mobile genetic elements. Hybrid dysgenesis is the result mating between a male fly with P elements and female fly that lacks P element.