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24 March, 22:18

Which of the following would be most likely to decrease genetic variability? Question 11 answers bottleneck genetic drift mutation random mating

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  1. 24 March, 23:42
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    Mutation and random mating would increase, not decrease genetic variability - especially mutation, as it is the thing that introduces genetic variability into species. Genetic drift is a change in frequency of an allele, so it changes th variability, but does not decrease it necessarily, can also increase it.

    the correct answer is bottleneck: it decreases the variability to only the genes that "fitted in the bottleneck".
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