Coral reefs form in areas where seawater temperatures average no less than:

a. 10° C.
b. 18° C.
c. 30° C.
d. 40° C.
e. 45° C.


B

Biology & Microbiology

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Stretches, permits expansion and recoil after stretching

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Gene therapy used to introduce foreign DNA into cells is done for what purpose?

What will be an ideal response?

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The generally accepted explanation for the movement of organic compounds in phloem is ____.

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If after several generations 30 percent of the males have antlers with 9 to 11 points, 40 percent have antlers with 15 to 17 points, and 20 percent have antlers with 12 to 14 points, this development will have been the result of:

A) directional selection. B) disruptive selection. C) stabilizing selection. D) founder effect.

Biology & Microbiology