February 27, 2017

Homework Help: Biology

Posted by Erin on Monday, September 3, 2012 at 5:57pm.

Down syndrome or trisomy 21, in humans is caused by an extra copy of relatively small chromosome 21. if a male with down syndrome could have children what is the likelihood that his children will also have down syndrome?

a. 0
b. 25
d. 75
e. 100

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