Cause+and+Chances

Cause and Chances

__C____ause:__

Down Syndrome (Trisomy 21) is a genetic disorder caused by an extra 21st chromosome. Which means there are 47 chromosomes instead of 46. You can get it from your parents which if your parent(s) who have down syndrome are furtile but that is very uncommen. You usually obtain it when a persons cell splits the 46 chromosomes into 24 and 22, instead of 23 and 23. Then your parent gives you the 24 chromosomes and your other parent gives you 23 which equals 47.

__Epiemiology:__ 

 The parents age has a huge influence on the chances on having a baby with Down Syndrome. When your at an age of 20-24, the probability is 1 in 1536. When your in age group of 35 to 39, the probability is 1 in 219. when your above the age of 45, the probability is 1 in 19 people. Even though the probabilty is much higher as the parents get older. 80% of babies being born are born to women under the age of 35. Which is showing how much of the population are having births in that age group.

Back to Home