Chapter 8, Problem 22CONQ

Summary Introduction

To review:

The birth of a red-eyed male when a female homozygous for X linked white allele is mated with a red-eyed male, and it is assumed that there is no mutation in the mother’s X chromosome that converted the white-eyed allele into a red eye allele.

Introduction:

The failure of homologous chromosomes to separate during cell division is known as nondisjunction. It can be of 3 types: improper separation of homologous chromosomes during meiosis 1, improper separation of sister chromatids during meiosis 2, and improper separation of sister chromatids during mitosis.