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Down's syndrome is a condition where an extra chromosome is produced on the _____ chromosome.
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Down's syndrome is a condition where an extra chromosome is produced on the _____ chromosome.

User Ben Groot
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Answer: On the Y chromosome

User Mixone
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Answer: 21th

Explanation: Down syndrome a.k.a trisomy 21 because it’s caused by an extra copy of a chromosome 21.

Hope easy and helps! ^^

User MarkSouls
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