Multiple Choice
Average heights of American men and women have increased steadily since the 1940s.What is the best explanation for this observation?
A) Height is a polygenic trait.
B) Height is influenced by an X-linked gene.
C) Height is influenced by environmental changes like improvements in diet.
D) Height is influenced by a Y-linked gene.
E) Height is influenced by crossing over.
Correct Answer:
Verified
Correct Answer:
Verified
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