2 years ago

The extra chromosome which produces Down's syndrome is:

Biology

2 answers:

MrRissso [65]2 years ago

3 0

Answer:

the extra chromosome is "y"

drek231 [11]2 years ago

3 0

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.

Explanation:

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