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There are no tests that can be done or can be diagnosed before birth.
no it's not a birth defect...it's a disease caught way before birth..Down syndrome is when a person has 1 more chromosome than normal people.
it is usually fatal before birth
"Diagnose Triple X syndrome by having your doctor perform what's called a "heel test" on your newborn daughter. Typically conducted 24 to 48 hours after birth, a heel test consists of a blood sample taken from an infant's heel. The blood sample is screened for a wide variety of metabolic and genetic disorders, including Triple X syndrome." Read more: How to Diagnose Triple X Syndrome | eHow.com http://www.ehow.com/how_2052189_diagnose-triple-x-syndrome.html#ixzz16iyC7Fwj
Height is determined by the genes you get from both parents. However it is also determined by the environment after birth, such as if you get enough protein for growth and repair of cells and calcium for making strong bones to avoid getting rickets.
Down syndrome is not caused by premature birth. Down syndrome is present in the embryo from the time of conception. Down syndrome, in contrast, may lead to premature birth.
The Priesthood wasn't determined by birth.
Triple H had torn a tendon in his shoulder a couple weeks before that match. He is also getting ready for the birth of his third child.
Marfan syndrome shows up at birth.
I think the clergy or Serf Feudal class was not determined by birth.
birth
It is actually extremely common for a baby to be screened for down syndrome while in the womb. While it is not always correct in its conclusion, a parent is told the possibility that their child may have down syndrom.