Astudy showed that the mortality risk for human babies goes up as birth weight decreases below the average. another study shows an increase in mortality risk as birth weight increases above the average. what can be said about human birth weight?
it is not a trait, and therefore it is not affected by natural selection.
it is a trait, but is not affected by natural selection.
it is a trait that is shaped by stabilizing selection.
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Astudy showed that the mortality risk for human babies goes up as birth weight decreases below the a...
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