Assume that a mutation occurs in the gene responsible for the production of hexosaminidase a

A Tay-Sachs disease is a rare degenerative disease that affects the brain and central nervous system and is hereditary, autosomal recessive (more common in descendants of Hebrews).

It is one of the diseases by lysosomal deposition. Individuals who suffer are unable to produce a lysosomal enzyme called hexosaminidase-A that participates in the degradation of the ganglia, a type of sphingolipid, which accumulate and degenerate in the central nervous system. It is included within lipidosis or lipid storage diseases.

the answer would be 3

make   gliitsh plesea   !