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andreyandreev [35.5K]
3 years ago
10

Down syndrome is caused by the presence of an extra copy of chromosome 21. how would a karyotype identify a person with down syn

drome ?
a) ID physical characteristics of someone with the disease.

b) ID Chemical abnormalities in the blood

c) ID parents as being carriers Before they have children

d) ID presence of an extra copy of chromosome 21
Chemistry
1 answer:
slava [35]3 years ago
4 0
The answer is d or b good luck
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