Biology

To find the frequency of the "a" allele in the population, we use the Hardy-Weinberg principle.

Given:

1.89% of the population have small eyes, which corresponds to the homozygous recessive genotype (aa), so .

2.11% of the population have large eyes, which corresponds to the dominant phenotype (A_).

Step 1: Find ( q ), the frequency of the recessive allele "a"

Since

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