Question

The extra chromosome which produces Down's syndrome is:

Options:
an autosome
a "X" chromosome
a "Y" chromosome
either "X" or "Y" chromosome

Answer 1

Answer: it would be x because when a child is born with down syndrome, that means the female gave 2 x chromosones and the male gave one x and one y chromosone.

Step-by-step explanation:

Answer 2

the extra chromosome is "y"