what are the causes of having a trisommy baby? is trisommy curable? how long is the life span of the baby?

Answer 1

Trisomies have various causes and outcomes. Most fetuses with a trisomy don't survive pregnancy. Trisomy 21 causes Down Syndrome. A baby born with trisomy 21 can live into her/his 50s or beyond. Most other trisomies have poorer outcomes with life expectancies of a few days or weeks. The most common ones are trisomy 13 (Patau's Syndrome), 18 (Edward's Syndrome), and 23 (sex chromosome; Klinefelter's Syndrome or double Y).

As to what causes a trisomy, it happens when the egg or sperm cell is created. When a full cell divides in two to create two sex cells (really half cells), instead of each chromosome pair dividing with one chromosome on each of the two new cells, one cell gets both, and the other gets none. If the cell with the 2 chromosomes is involved in conception, then you get a trisomy (3 of one of the chromosomes where there should be 2); if the cell with no chromosome conceives, then you get a monosomy (only 1 chromosome).

In some cases, however, the trisomy develops after conception. In other words, a normal (23 chromosome) sperm fertilizes a normal egg. Then, in developing, a cell divides incorrectly, giving the baby-to-be a trisomy in some but not all of the cells. This is called a mosaic. In most cases, a trisomy mosaic is less severe than the same trisomy affecting all cells.

A trisomy cannot be cured as it affects every (or a large portion) of the cells of a baby's body at the sub-cellular level.

Answer 2

Cause/Definition-The condition of having three copies of a given chromosome in each somatic cell rather than the normal number of two.

There are so many types of Trisomy that you would have to know the type he/she has and then research it.

Answer 3

Trisomy is a chromosomal defect... For more information here are some great websites:

www.trisomy.org/html/trisomy_18_facts.htm
www.trisomyonline.org/
www.ds-health.com/trisomy.htm

Best wishes!

Answer 4

This condition is almost always fatal inutero (during pregnancy) It is rare for a child to actually be born with this and if they do they usually pass on soon after birth.