Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home > Trisomy

A trisomy means the presence of three (instead of the normal two) chromosomes of a particular numbered type in an organism. Thus the presence of three chromosome 21s is called trisomy 21. Most trisomies result in a number of birth defects (which are often present in most individuals with a particular extra chromosome). Many trisomies result in early death (if not a miscarriage). A partial trisomy occurs when part of an extra chromosome (instead of a whole one), is attached to one of the other chromosomes. A mosaic trisomy is a condition where not all cells contain extra chromosomal material.

While a trisomy can occur with any chromosome, the most common types (in humans) are:

Trisomy 21 ( Down Syndrome)
Trisomy 18 ( Edward's Syndrome)
Trisomy 13 ( Patau's Syndrome)
Trisomy 8 ( Warkany syndrome)

Trisomy involving sex chromosomes include:

Trisomy X ( Triplo X Syndrome )
Klinefelter's syndrome (XXY)
XYY

Topics: Trisomy x, Guides, Tutorials...

TrisomyA trisomy means the presence of three (instead of the normal two) chromosomes of a particular numbered type in an organism. Thus the presence of three chromosome 21s is called trisomy 21. Most trisomies result in a number of birth defects (which are often

Trisomy-xAlso known as Triplo-x and 47xxx, Trisomy-x is a chromosonal constitution in females where the individual has an extra x chromosone. Trisomy-x results during division of a parent's reproductive cells. Females with Trisomy-x are typically tall with slightl

Non User