"Dominant Means More Common"
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A dominant allele's population frequency is set by selection and history, not by its dominance, so a dominant allele can be rare and a recessive allele common.
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The dominant allele causing Huntington's disease remains rare across human populations despite being dominant.
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Dominance is about masking a paired allele in a heterozygote — treating it as population frequency confuses two separate facts.
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