<span>The correct answer is letter A, disorders in individual genes are responsible for Down's syndrome.

This is a human genetic disorder that is associated with physical growth delays, characteristic facial features, and a mild to moderate intellectual disability. This is a condition in which the genes make a copy of the chromosome 21. </span>

5 0

4 years ago

Which part of the cell membrane can catalyze chemical reactions

kaheart [24]

the answer is enzymes

5 0

4 years ago

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Is the cell wall made up of tough fiber?

Artemon [7]

The cell wall is made up of tough stringy cellulose fibers.

Hope this helps!!

7 0

3 years ago