-Genetic
-Takes place trisomy 18 -Usually only occurs in one pregnancy - - -Once a woman ages her chromosomes are more likely to divide, increasing her chances of becoming a carrier of a child Down Syndrome.
-After the age of 35 women are at a much higher risk. -Screening tests during pregnancy are provided to find out the possibility. A physical or chemical abnormality that's present at birth. Birth Defects can be inherited by genetics or a result of environmental influences.
Environmental factors such as prenatal factors play a big role as one of the causes woman are exposed to during pregnancy.
|