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If down syndrome means having an extra chromisome, which is harmful, does that mean that 2 extra would be ok since they make a pair?
Health by Anonymous 2018-06-13 19:09:20
Social Science
If down syndrome means having an extra chromisome, which is harmful, does that mean that 2 extra would be ok since they make a pair?
1 answer
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Anonymous
only Jews have extra chromosome