If Ellen carries a recessive gene for blue eyes, which of the following must be true?

Question

Quizplus · Accepted Answer

In order for Ellen to carry a recessive gene for blue eyes, one of her parents must have carried the gene as well. If both of her parents had blue eyes, it is possible that they each carried a recessive gene for another trait and Ellen inherited the recessive blue-eye gene from both of them, but this is less likely. If neither of her parents carried the recessive gene, Ellen would not have inherited it.

If Ellen Carries a Recessive Gene for Blue Eyes, Which