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