Trisomy of chromosome number 21 in man c...

Trisomy of chromosome number 21 in man causes:

Thalassemia

Down syndrome

Turner syndrome

Sickle-cell anaemia

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The facial features of Down syndrome resemble to mongol an Asian ehtnic group

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Trisomy of chromosome 21 causes:

Genetic disorder due to trisomy of chromosome 21 in humans is :

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Down syndrome is caused by an extra copy of chromosome number 21. What percentage of offspring prodused by an affected mother and a normal father would be affected by this disorder?

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Trisomy of chromosome number 21 in man causes:
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