Multiple choice

If parents of a child are homozygous for a genetically inherited recessive trait, what is the probability of their second child not having this trait?

  1. 0%

  2. 25%

  3. 50%

  4. 100%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Since both parents are homozygous recessive (aa), all of their children will be as well. As a result, none of them will be free of this recessive trait in their phenotypes.

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