According to Freeman textbook, which prediction about giraffe necks were not tested?
A. Neck length is variable among giraffes;
B. Neck length in giraffes is heritable,
C. Giraffes feed high in trees, especially during the dry season, when food is scarce and the threat of starvation is high.
D. None of them were tested.
Ans: B. Neck length in giraffes is heritable,
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