Asked by crystal
Environmental factors can influence natural selection because they can increase or decrease
the number of chromosomes in an individual.
the number of chromosomes in a population.
the amount of genetic variation in an individual.
the amount of genetic variation in a population.
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the amount of genetic variation in a population.
Explanation: natural selection acts on heritable variation among individuals in a population. Environmental changes alter which traits are favored, changing allele frequencies and thus increasing or decreasing genetic variation at the population level. Environmental factors do not generally change an individual's chromosome number, and they only indirectly affect mutation rates (and thus variation) rather than an individual’s inherent genetic variation.
Explanation: natural selection acts on heritable variation among individuals in a population. Environmental changes alter which traits are favored, changing allele frequencies and thus increasing or decreasing genetic variation at the population level. Environmental factors do not generally change an individual's chromosome number, and they only indirectly affect mutation rates (and thus variation) rather than an individual’s inherent genetic variation.
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