Biology Helpful answer

I was solving a genetics question where both parents have brown eyes, but their child has blue eyes. How is that possible if brown eyes are dominant?

Anonymous 13d ago

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marwan ahmed Verified teacher · 13d ago

their is both dominant and recessive gene eg eye colour brown dominant B and blue recessive b. mother has Bb and father Bb the probability of the sot to have brown is 75 percent and 25 percent blue colour as both small bb will form blue colour eye

Helpful

Toqa Fouad Verified teacher · 10d ago

If both parents have dominant brown eyes so its Bb + Bb (B=dominant brown while b=recessive blue )so the results could be one of four BB or Bb or Bb or bb therefore the blue eyes bb have 25% to appear (you should match all genes together to have all possible results )