Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Patau's Syndrome
Name: John
Location: N/A
Country: N/A
Date: N/A


Question:
Is Patau's Syndrome (Trismoy 13) a dominate or recessive trait?



Replies:
Patau is not caused by gene mutation. It is a nondisjunction disorder in which the 13 th chromosome pair doesn't separate from each other in meiosis. This causes a sex cell (gamete) to have 2 number 13 chromosomes when it should only have 1. So is this were an egg cell for instance, when it was fertilized by a sperm carrying a 13th chromosome, the resulting cell will have 3 number 13 chromosomes instead of the normal 2. The word trisomy means to have 3 chromosomes in a "pair" . So it is not dominant or recessive. It is from having too much information, not the wrong kind of information.

Van Hoeck



Click here to return to the Biology Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory