How the y Makes the Guy
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Book Description
In Barron's popular Microexplorers Series, young explorers learn how male and female cells combine when a child is first conceived--and how the genes within each cell determine the characteristics of this new living being. The way in which X and Y genes combine determine whether the child will be a boy or a girl. Full-color illustrations.
Book Information
Publisher | Barrons Educational Series |
Binding | Hardcover (2 editions) |
Reading Level | Ages 9-12 |
# of Pages | 42 |
ISBN-10 | 0764150642 |
ISBN-13 | 978-0764150647 |
Publication Date | 11/1997 |
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