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Baby Shanna Has Been Diagnosed with Tay-Sachs Disease

Question 73

Multiple Choice

Baby Shanna has been diagnosed with Tay-Sachs disease.However,neither of her parents has shown symptoms of this disease.What can we conclude from this information?


A) Shanna is heterozygous for the Tay-Sachs gene.
B) Shanna's parents are homozygous for the Tay-Sachs gene.
C) Shanna is homozygous for the Tay-Sachs gene.
D) One of Shanna's parents is a carrier of Tay-Sachs,the other is not.

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