MCAT Question of the Day
    •

    Q:

    		 For an X-linked trait, a man carries the defective gene and is afflicted with the disorder. What are the chances that his son will be afflicted if his son's mother is not a carrier of the trait?
    		 

    A

    		 0

    B

    		 1/4

    C

    		 1/2

    D

    		 3/4



    Mendelian Concepts | Quantitative Skills |
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