Quiz 23 - 1)Which of these is a statement that Darwin would...

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1 1)Which of these is a statement that Darwin would have rejected? A) Natural populations tend to produce more offspring than the environment can support. B) Individuals can acquire new characteristics as they respond to new environments or situations. C) Environmental change plays a role in evolution. D) The smallest entity that can be observed to evolve is an individual organism. E) Inherited variation in a population is a necessary precondition for natural selection to operate. Natural selection acts on individuals but the evolutionary impact of the process of natural selection is only apparent in the changes in a population over a long period of time 1)Which of these is a statement that Darwin would have rejected? A) Natural populations tend to produce more offspring than the environment can support. B) Individuals can acquire new characteristics as they respond to new environments or situations. C) Environmental change plays a role in evolution. D) The smallest entity that can be observed to evolve is an individual organism. E) Inherited variation in a population is a necessary precondition for natural selection to operate. 2) In peas, a gene controls flower color such that R = purple and r = white. In an isolated pea patch, there are 36 purple-flowering plants and 64 white- flowering plants. Assuming Hardy-Weinberg equilibrium, what is the value of q for this population? A) 0.75 B) 0.60 C) 0.80 D) 0.36 E) 0.64 Sperm C R (80%) C W ( 2 0 % ) 80% C R ( p = 0.8) C W (20%) 20% C W ( q = 0.2) 4% ( q 2 ) C W C W R 8 64% ( p 2 ) C R C R 16% ( qp ) C R C W E g s A Mendelian Cross C R C W X C R C W p 2 + 2 pq + q 2 = 1 C R C R C R C W C W C W 0.8 2 + 2 X 0.16 + 0.2 2 = 1 0.64 + 0.32 + 0.04 = 1 (0.64 + 0.32 + 0.04) X 100 = 100% 16% ( pq ) C R C W 2) In peas, a gene controls flower color such that R = purple and r = white. In an isolated pea patch, there are 36 purple-flowering plants and 64 white- flowering plants. Assuming Hardy-Weinberg equilibrium, what is the value of q for this population? A) 0.75 B) 0.60 C) 0.80 D) 0.36 E) 0.64
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2 3) Heterozygote advantage should be most closely linked to which of the following? A) disruptive selection B) sexual selection C) random selection D) directional selection E) stabilizing selection Features of natural selection Original population (c) Stabilizing selection (intermediate color favored in intermediate habitat) (b) Disruptive selection (two habitats; mice of
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Quiz 23 - 1)Which of these is a statement that Darwin would...

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