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galben [10]
4 years ago
9

Downs syndrome occurs when an individual ends up with 3 copies of the 21st chromosome (trisomy 21). in what phase of meiosis cou

ld the mistake have occurred (there are two possibilities)? please draw the nondisjunction event occurring.
Biology
1 answer:
IRINA_888 [86]4 years ago
7 0
I think there is only 1 possibility... its metaphase 1 i guess
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