Variations in Populations

AP Biology· difficulty 3/5

Stabilizing selection

A
$Favors novel phenotypes against ancestral ones, shifting variation$
B
$Favors extreme phenotypes against intermediates, increasing variation$
C
$Favors rare phenotypes against common ones, maintaining variation$
D
$Favors intermediate phenotypes against extremes, reducing variation$
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Explanation

Example: human birth weight — too small or too large reduces survival, favoring the average.

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