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

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

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