Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Chapter 21, Problem 7U
The possession of fine fur in 5-month human embryos indicates
a. that the womb is cold at that point in pregnancy.
b. humans evolved from a hairy ancestor.
c. hair is a defining feature of mammals.
d. some parts of the embryo grow faster than others.
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Chapter 21 Solutions
Biology
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