Chapter 8, Problem 34CONQ

Summary Introduction

To review:

The possible number of chromosomes in mother and father having a daughter with familial Downsyndrome(46 chromosomes) and a son who is phenotypically affected (45 chromosomes).

Introduction:

The process in which a piece of one chromosome detaches itself and gets attached to another chromosome is known as translocation. Translocation can be of two types, namely, balanced and unbalanced translocations. Balanced translocation does not cause any change in the amount of genetic material. Unbalanced translocation is the one wherein the exchange of the chromosomal material is unequal leading to an extra or missing number of genes.