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.
Answer: B
You might also like to view...
Sometimes cultural change can drive biological evolution
A. true B. false
Cells transplanted from the neural tube of a frog embryo to the ventral part of another embryo develop into nervous system tissues. This result indicates that the transplanted cells were _____
A) totipotent B) determined C) differentiated D) mesenchymal
Which of the following pairs is mismatched?
A) tick — Rocky Mountain spotted fever B) tick — Lyme disease C) mosquito — malaria D) mosquito — Pneumocystis E) mosquito — encephalitis
Probes used for detecting genetic sequences are frequently composed of
A. agarose. B. synthetic nucleic acids and labeled conjugates, such as fluorescent dyes. C. restriction enzymes. D. silicon chips. E. nitrocellulose.