Consider the trait in Figure 22.5a. Which statement about this trait is correct? Please choose the best option.                                      a) In humans, the trait cannot be explained by the theory of evolution by natural selection. b. In humans, the trait improves the biological fitness of individuals. c. In humans, the trait is similar to a functional version of the trait in closely related species. d. Humans lack vestigial traits

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Consider the trait in Figure 22.5a. Which statement about this trait is correct? Please choose the best option.                                     
a) In humans, the trait cannot be explained by the theory of evolution by natural selection.

b. In humans, the trait improves the biological fitness of individuals.

c. In humans, the trait is similar to a functional version of the trait in closely related species.

d. Humans lack vestigial traits

(a) The human tailbone is a vestigial trait.
Monkey
tail (used
for balance
and locomotion)
Sekar Balasubramanian/123RF
Human
coccyx
Sebastian Kaulitzki/Alamy Stock Photo
Transcribed Image Text:(a) The human tailbone is a vestigial trait. Monkey tail (used for balance and locomotion) Sekar Balasubramanian/123RF Human coccyx Sebastian Kaulitzki/Alamy Stock Photo
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