Multiple choice

A man who carries an X-linked allele will pass it on to

  1. all of his daughters

  2. half of his daughters

  3. all of his sons

  4. half of his sons
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A man has one X chromosome and one Y chromosome. He passes his X chromosome to all of his daughters and his Y chromosome to all of his sons.

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