QUESTION 1 Natural selection requires differential reproductive success. True False QUESTION 2 Which type of natural selection favors one extreme phenotype, and disfavors the opposite extreme.? stabilizing selection disruptive selection directional selection bimodal selection QUESTION 3 Macroevolution is a change in allele frequencies within a population. True False QUESTION 4 __________ occurs when very few individuals survive a disaster thereby reducing genetic variation in a population. gene flow mutations founder effect bottleneck effect QUESTION 5 The ultimate source of all variation is random gene mutation. True False
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Question 1 (1 point) Without mutation, all evolutionary processes would eventually grind to a halt: True False Question 2 (1 point) Founder events help small populations recover from genetic drift. This rescue effect preserves genetic variation, allowing future generations to respond to environmental change. True False Question 3 (1 point) Mutation is a driving force of evolution that changes gene frequencies across generations: True False
Sri K.
Which of the following are necessary for natural selection to occur? Select all that apply. a. Genetic heritability b. Evolution c. Differential reproductive success d. Variation e. Speciation
Shaiju T.
Match the evolution concepts. a. leads to interdependent species b. changes in a population's allele frequencies due to chance alone c. allele frequencies change owing to immigration, emigration, or both d. survival of the fittest e. burst of divergences from one lineage into a set of niches f. source of new alleles gene flow natural selection mutation genetic drift adaptive radiation coevolution
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