Use the Following Information as Background for the Next Few

Use the following information as background for the next few questions.
Scientific studies have shown that ectrodactyly, a condition involving deficient or absent digits on the hand or foot, may be caused by a defect in the apical ectodermal ridge of an embryo's limb bud.
-Assume that ectrodactyly results from a deficiency in secretion of signal proteins. What would happen if fibroblast growth factor were applied to the AER during limb formation?

A) All limb buds would cease further growth.
B) The limb bud would be reabsorbed.
C) The limb bud would remain the same.
D) The limb would grow to half its normal size.
E) A nearly normal limb would grow.

Correct Answer:

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