Instructions

Which conditions are necessary in order for natural selection to occur on a given trait in a population? The population must be extremely large. Offspring inherit the trait from their parents. Individuals experience no intraspecific competition. A version of the trait provides a fitness advantage. Different versions of the trait exists in the population. about us privacy policy terms of use contact us help careers Which statements about genetic drift are true? Genetic drift can only impact existing alleles and reduces allelic variation in a population. Genetic drift occurs more slowly and has a greater effect in small populations, as compared to large populations. Genetic drift is the change in the frequency of an allele in a population that occurs because of random chance. Genetic drift is the change in the frequency of an allele ina population that occurs because the allele provides a survival advantage. privacy policy help about us Careers terms of use contact us

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