Answer
A. A sperm.
Work Step by Step
The Y chromosome marks the cell out as a male gamete, a sperm. A sperm may carry either an X or Y chromosome, but a human egg will always only carry an X chromosome.
Campbell Biology (10th Edition)
by Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Published by
Pearson
ISBN 10:
0321775651
ISBN 13:
978-0-32177-565-8
Chapter 13 - Test Your Understanding - Level 1 - Knowledge/Comprehension - Page 266: 1
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