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22 September, 15:31

In humans, brown eyes are dominant over blue eyes. What conclusions could you draw about the genotypes of a mother who had children with blue eyes, if both parents were brown-eyed? *

1 The children were adopted

2 A "mistake" occurred in one or both parents' genes

3 One parent was heterozygous brown-eyed

4 Both parents were heterozygous brown-eyed

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  1. 22 September, 15:40
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    Explanation:

    If both parents were Hetero brown, they would both have this allele: Bb.

    If you were to draw a punnet square, the outcomes would be: BB, Bb, Bb, and bb.

    There would be a 75% chance of the offspring having brown eyes and a 25% chance of the offspring having blue eyes.
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