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In a Very Large Population, a Quantitative Trait Has the Following

Question 38

Multiple Choice

In a very large population, a quantitative trait has the following distribution pattern:
In a very large population, a quantitative trait has the following distribution pattern: Figure 23.1 -If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring? 1) immigration or emigration 2) directional selection 3) adaptation 4) genetic drift 5) disruptive selection A) 1 only B) 4 only C) 2 and 3 D) 4 and 5 E) 1, 2, and 3 Figure 23.1
-If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring?
1) immigration or emigration
2) directional selection
3) adaptation
4) genetic drift
5) disruptive selection


A) 1 only
B) 4 only
C) 2 and 3
D) 4 and 5
E) 1, 2, and 3

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