Is an autosomal recessive condition resulting in degeneration of the nervous system. down syndrome huntington's disease kleinfelter syndrome tay-sachs disease

The correct answer is Tay-Sachs disease.

Explanation:

Tay-Sachs disease is an autosomal recessive genetic disease that causes the degeneration of the nervous system. This disease only expresses itself if an individual has two recessive copies of a particular gene that cause this disorder.

The reduced level or absence of an essential enzyme beta-hexosaminidase causes this disorder.

Thus, the correct answer is Tay-Sachs disease.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.