MCAT Question of the Day
    •

    Q:

    		 For a particular gene, the recessive allele is lethal if the dominant allele is not present. In a cross between two heterozygotes, what proportion of viable offspring would be heterozygotes?
    		 

    A

    		 1/4

    B

    		 1/3

    C

    		 2/3

    D

    		 3/4



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