Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
11th Edition
ISBN: 9781488687075
Author: Lisa, A. Urry
Publisher: PEARSON
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Chapter 15.4, Problem 1CC
Summary Introduction

To determine: The reason for occurrence of Down syndrome in a child if chromosomal translocation occurs in gonads of the child’s parents, involving attachment of  third copy of chromosome 21 to chromosome 14.

Concept introduction:

Down syndrome is caused by chromosomal aberration in which trisomy of chromosome 21 occurs. The parents of the children with Down syndrome are normal.

Chromosomal translocation is a process in which a part of chromosome does not break during meiosis and is carried to the gamete as it is.

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