Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 14, Human Heredity - Assessment - 14.1 Human Chromosomes - Understand Key Concepts/Think Critically - Page 412: 1

Answer

b.

Work Step by Step

For human cells, the chromosome number is 46. This means there are 23 pairs of chromosomes. Human cells contain 44 autosomes and two sex chromosomes, the X and Y chromosomes. For female humans, they will have 44 autosomes and two X chromosomes. Human males have 44 autosomes and one X and one Y chromosome. For other species, the chromosome numbers are normally different from the number of chromosomes in human cells.
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