Which of the following best explains the importance of phenotypic variation?
Mice live in a shoreline ecosystem where there are areas of light-colored sand and areas of dark-brown grasses. The mode of selection likely to take place would be .
In chimpanzees, young with low birth weight lose heat easily. Offspring with a high birth weight can have complications during birth because of their size. The mode of selection likely to take place would be .
As the common strain decreases, the rare strain .
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