If you look at the link below, the probability of a 28 year old female having a baby with Down syndrome is a little less than 1 in 1000.
50%
I am unsure of the answer to this question, but I feel the need to remove the previous ridiculous answer stating that "women with down syndrome are sterile." They ARE indeed fertile. I am in search of the same information, and will be editing this post once I find the correct answer.
The probability of a coin landing head-side down is 0.5 The probability of landing head-side up is 0.5 Did you mean to ask the probability of it landing on its edge ?
The probability of a tornado hitting Kansas is 100%. Dozens of tornadoes occur in Kansas every year.
No. Parents who have a child with Down syndrome do not have an increased chance in having another child with Down syndrome. Everyone has the same chance of having a child with Down syndrome, 1%.
No. Parents of Down Syndrome typically are normal genetically and there is no test for parents to determine the possibility of a Down Syndrome offspring. There are no known external factors that are known to contribute to Down Syndrome. It is possible to test for Down Syndrome in the fetus.
Yes, amniocentesis. But be warned there is a higher probability of miscarriage.
If you look at the link below, the probability of a 28 year old female having a baby with Down syndrome is a little less than 1 in 1000.
Since Down Syndrome is not genetic and is a trisomy, dominant and recessive genes do not play a role and it is possible for two down syndrome parents to have a child without down syndrome.
That would mean that the mother is the one with Down syndrome, since men with Down syndrome are sterile. There is a 50% chance that the child will have Down syndrome and 50% chance that child will be born without.
Down's Syndrome is caused mainly by a mutation in the gene. It is a genetic disorder, which means it was passed on from parents to offspring.
The same way any other person is 'made' - by their parents having intercourse ! Down Syndrome is a genetic condition inherited from one or both parents.
Yes two non-Down syndrome parents can have a Down syndrome child. This is the most common situation, mainly because very few Down syndrome affected people are parents. Few Down Syndrome affected people become parents, partly because of reduced fertility associated with the syndrome, partly because of an increased risk of passing on the syndrome (very roughly from 1 in 800 to 1 in 3), and partly because of societal restrictions. ___________ Also, the parent(s) who has 1 down syndrome gene will be passed onto the child
Having a sibling with Down syndrome does not directly increase the chances of giving birth to a child with Down syndrome. The risk is influenced by maternal age, not family history. If both parents are carriers of the genetic translocation for Down syndrome, the risk may be higher.
Unless one has translocation (inherited) Down syndrome than No, they more than likely Won't.
50%