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AlekseyPX
4 years ago
6

If the allele encoding polydactyly (six fingers) is dominant why do most people have five fingers?

Biology
1 answer:
Thepotemich [5.8K]4 years ago
4 0

Answer:

The polydactyl allele is very rare in the human population.

Explanation:

The dominant alleles are expressed in both homozygous and heterozygous states. However, the harmful dominant alleles or the dominant alleles that do not impart the survival and/or reproductive advantages to the individuals exhibit lower frequency in natural populations.

The allele for polydactyly is dominant but is present in lower frequency in the natural human populations. Being a less frequency dominant allele, it is not expressed in most of the individuals. So, most of the individuals have five fingers instead of having six.

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