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Question

A population will not exist in Hardy - Weinberg equilibrium if

A
individuals mate selectively
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B
there are no mutations
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C
there is no migration
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D
the population is large
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Solution

The correct option is A individuals mate selectively
Hardy- Weinberg equilibrium exists in population only when following conditions are present.
No mutation
No gene flow
Nongenetic drift
No genetic recombination
No natural selection pressure.
If the individuals in the population mate selectively, it will lead to mutation that results in the shifting of the Hardy - Weinberg equilibrium,

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