A) sex-linked recessive gene
B) sex-linked dominant gene
C) autosomal dominant gene
D) autosomal recessive gene
Correct Answer: D
Solution :
Tay-Sachs disease is a recessive autosomal disorder, which appear after birth due to deficiency of enzyme P, D-N-acetyl hexosaminidase. It results damage of brain and spinal cord and death at the age of 3-4 years.
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