In small populations, genetic drift can lead to _____, where alleles are permanently lost, which decreases genetic diversity in a population. founder effect gene flow gene fixation natural selection
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This can lead to certain alleles becoming more common while others are lost over time. Show more…
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A population has a small size, high level of genetic drift, and very little migration into the population. What will most likely happen to the genetic diversity in the population over time? A. Genetic diversity will remain unchanged because genetic drift does not have much of an impact on small populations. B. Genetic diversity will remain unchanged because high levels of genetic drift offset low levels of gene flow. C. Genetic diversity will increase because the existing alleles will mutate into new alleles. D. Genetic diversity will decrease becaus
Adi S.
Which of the following are long-term consequences of genetic drift in small populations? (select all that apply) Increased homozygosity Loss of diversity (some alleles become fixed or lost) Increased gene flow Increased susceptibility to environmental stressors like disease Increased mutation rates
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Small effective population size is a concern for conservation of natural populations because: A. Deleterious alleles can persist and even reach fixation because of genetic drift. B. Selectively beneficial alleles can be lost because of drift. C. Overall genetic diversity is low, reducing the capacity of populations to adapt. D. Inbreeding can result in inbreeding depression, which reduces fitness. E. All of the above
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