EVOLUTION (Bio 370) SAMPLE ANSWERS FOR THE PRACTICE MIDTERM 1) a) Founder of modern systematics b) The adaptive landscape c) The Great Chain of Being 2) One possible answer: Life history (age and size at maturity) in guppies was selected when they were moved between stream sections with different amounts of predation. Second possible answer: Shell color in a snail ( Cepia nemoralis ) was selected when they were moved between woods and open (grassy) habitat. 3) If there is no genetic variation for a trait, it will not evolve even if selected on.
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