Chapter 22, Problem 41E

Summary Introduction

To determine:

The sex of the zygote (male or female), when the fertilization gives rise to some zygotes having XXY sex chromosome, and further develops into zygote.

Introduction:

The zygote with XXY chromosome developed by the non-disjunction mechanism, in which normal disjunction of X and Y chromosome fails and both sex chromosomes will move to the same pole, resulting in the development of spermatozoa with both X and Y chromosome and spermatozoa without sex chromosome.