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Principles Of Inheritance And Variation

Question
CBSEENBI12047659

Tay Sach's disease is due to

  • sex linked recessive gene

  • sex linked dominant gene

  • autosomal dominant gene

  • autosomal recessive gene

Solution

D.

autosomal recessive gene

Tay Sach's disease is a recessive autosomal disorder which appear after birth due to deficiency of enzyme β,D-N-acetyl hexosaminidase. It results damage of brain and spinal cord and death at the age of 3-4 years.