If both a mother and a father carry a dominant gene for dark eyes and a recessive gene for light eyes (Bb), what is the likelihood that their offspring will have dark eyes?
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Even though they both have brown eyes as their phenotype (their appearance) in order to have a child with blue eyes -according to mendel- Both parents must have the recessive blue trait (which doesnt appear in their phenotype because its masked by the dominant brown) in both their genotypes (genetic makeup).
Therefor their genotypes would be, Bb and Bb; B for brown, b for blue. To give you the possible outcomes Bb BB Bb (all brown)
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