Dr. Kitty Hauke is studying lobsters in Maine. She noticed that over several years the average length of
pincers had increased within this population. She hypothesized that having larger pincers provided a
fitness advantage. To test her hypothesis, she introduced 75 large pincer lobsters and 75 small pincer
lobsters into an isolated bay area that was similar to the lobsters' natural sea environment. Over 10
years, Dr. Hauke observed this isolated population of lobsters. What would she likely observe if her
hypothesis was incorrect?
Which of the scenarios below represent a gene pool that has changed through some process of
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