Biology

Biology, 15.07.2019 00:30, graciecope04

How does selection affect the genetic variation in the population?

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Biology, 22.06.2019 11:30, yarrito20011307

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

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Biology, 15.07.2019 17:00, Shadow0202

Natural selection is least likely to be the cause of a change in a population's allele frequencies when: a. there is no competition for resources. b. the population has no genetic variation. c. there is ample genetic variation in the population. d. the ecosystem experiences extreme disturbances.

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Biology, 01.09.2019 10:20, GusGus11

Which of the following statements concerning genetic variation is most accurate? a the process of natural selection directly creates genetic variation b changes in the environment of a population stimulate mutation and genetic change in that population c genetic variation must first be present in a population before natural selection can act upon organisms in that population d the higher the average heterozygosity in a population, the less genetic variation in the gene pool

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Biology, 10.09.2019 19:10, jmdlightsout12345

Show how selection, genetic drift, gene flow, and mutation relate to genetic variation. match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer. (1) gene flow genetic variation of a population (2) mutation genetic variation (3) selection genetic variation (4) genetic drift genetic variation (a) increases (b) may increase, decrease or maintain (c) decreases (d) may increase or decrease

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