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Author Question: Two closely related populations of mice have been separated for many generations (Read 942 times)

j_sun

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on: Jul 11, 2013
Two closely related populations of mice have been separated for many generations by a river. Climatic change causes the river to dry up, thereby bringing the mice populations back into contact in a zone of overlap. Which of the following is not a possible outcome when they meet?
A) They interbreed freely and produce fertile hybrid offspring.
B) They no longer attempt to interbreed.
C) They interbreed in the region of overlap, producing an inferior hybrid. Subsequent interbreeding between inferior hybrids produces progressively superior hybrids over several generations.
D) They remain separate in the extremes of their ranges but develop a persistent hybrid zone in the area of overlap.
E) They interbreed in the region of overlap, but produce sterile offspring.


coco

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Reply #1 on: Jul 12, 2013
Hey again :D

I'm guessing it's C. It makes sense.


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j_sun

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Reply #2 on: Aug 31, 2013
Sick :D Thanks


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