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Nataly_w [17]
3 years ago
13

The extra chromosome which produces Down's syndrome is:

Biology
2 answers:
MrRissso [65]3 years ago
3 0

Answer:

the extra chromosome is "y"

drek231 [11]3 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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The culprit is an "arctic outbreak" that originated just above the US-Canada border, which is freezing temperatures across much of the US territory.

<h3>Arctic outbreak</h3>

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