How have Caesarean sections and intensive neonatal (near-birth) medical care likely affected the average birth weight of American babies?
A) Birth weight is now subject to disruptive selection instead of stabilizing selection.
B) Average birth weights have significantly decreased.
C) Gene flow will occur in the direction of larger and smaller infants.
D) Stabilizing selection for birth weight no longer has as much of an influence.
Correct Answer:
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