Tay-Sachs disease follows an autosomal recessive pattern of inheritance, so the unaffected carrier will be the child a.
The correct option is d, a.
Tay-Sachs is a neurodegenerative disorder, which causes the deficiency of an enzyme called hexosaminidase A.
The enzyme hexosaminidase A present in the lysosome helps in the digestion of fats.
This disorder causes the excess accumulation of lipid or fat in the ganglion cells.
This causes dysfunction of the central nervous system.
The correct option is d, e.
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