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23 April, 20:57

Brown-eye genes are dominant over blue-eye genes. what is the best explanation for the fact that all the blue-eye alleles have not disappeared in the human population?

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  1. 24 April, 00:29
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    Dominant genes will come before recessive. Someone with brown-eye and blue-eye genes will have brown eye since it's the dominant one. So sometimes blue - eye allele is hidden because it's not express, but not always.

    People with blue eyes must have all blue-eye allele. Therefore, if there are people with blue eyes you can conclude that blue-eye allele has not disappeared in the human population.

    If there is no factor that intervenes with population breeding, Hardy-Weinberg equilibrium will be maintained and that can be used to explain why the all the blue-eye alleles have not disappeared in the human population
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