MadSci Network: Genetics

Subject: Non-disjunction and Down's syndrome

Date: Mon Oct 21 05:26:53 1996
Posted by: Robert Flegg
Grade level: teacher/prof
School/Organization: Grace College
City: Redcliffe State/Province: Queensland
Country: Australia
Area of science: Genetics
Message ID: 845893613.Ge
A textbook from which I am teaching claims that Downs Syndrome is
the result of non-disjunction and that this occurs the father
in 25% of cases.  Is this correct?  If so, how does the incidence
of Downs Syndrome increase with the age of the mother if meiosis
in females occurs very early in life? 

Re:Non-disjunction and Down's syndrome

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