What is the cause of the upsurge in cases of Down syndrome?
There are three possible causes:
1) The human genepool is beginning to stagnate, which could end in the extinction of our species.
2) Women wait until later in life to get pregnant, which makes birth defects more likely.
3) Increased drug and alcohol consumption (need I say more?)
yes in a small number of cases.
In 5% of Down syndrome cases, a translocation that occurred in previous generations between Chromosome 21 and 14 is the cause.
Most cases of down syndrome are not inherited. Translocation Down syndrome can be inherited.
No, Down syndrome does not cause death per se.
Chlamydia does not cause Down syndrome in future pregnancies.
No, almost all males with Down Syndrome are unable to have children. There have only been three recorded cases of Down Syndrome fathers
The cause of Down Syndrome was discovered in 1958 by Jérôme Lejeune.
In some down syndrome cases the child will get 3 copies of a chromosome known as chromosome 21.
People with high functioning down syndrome can in some cases lead completely independent lives.
No. Nothing the mother or father does or doesn't do causes their baby to have Down syndrome. Down syndrome happens at conception & the exact cause is unknown.
Down syndrome is a genetic defect and is the result of an extra chromosome at the time of conception. The use of Procardia (or any other drug) does not cause Down syndrome.
No. down Syndrome is caused by a triplication (instead of a duplication) of the 21st Chromosome. It is not caused by an allele and is not inheritable in most cases.
You cannot do anything to cause your child to have Down Syndrome, drinking,smoking etc in pregnancy does not cause this. Down is caused by a genetic oops where there is an extra chromosome. It is present from the time of conception. You cannot catch Down syndrome.
The cause of Down syndrome is one of three types of abnormal cell division involving chromosome 21. All three abnormalities result in extra genetic material from chromosome 21, which is responsible for the characteristic features and developmental problems of Down syndrome. The three genetic variations that can cause Down syndrome include: Trisomy 21. More than 90 percent of cases of Down syndrome are caused by trisomy 21. A child with trisomy 21 has three copies… Read More
There is no scientific evidence that alcoholism of the father increases the risk of Down syndrome.
Mistakes in meiosis may cause Down syndrome. The error happens when the chromosomes segregate into the gametes. The egg or sperm may have too many or too few chromosomes. Down syndrome has an extra chromosome in the 21st pair.
2009 statistics show over 131,199 people in Mexico were diagnosed with down syndrome, or 3.73 cases per 10,000 births.
Down Syndrome is a genetic problem dealing with chromosomes. Not drug problems. But your baby can die or get many worse complications than Down Syndrome. == ==
No, Down syndrome is a genetic disorder, and occurs because of the presence of an extra chromosome, not due to smoking. The chances of a women giving birth to a Down syndrome baby increases with age.
See the Related Link to a very good FAQ on the causes of Down syndrome.
You are talking about Down syndrome. Because of the weak muscle tone of a child with Down syndrome, it appears as if the tongue is too large for the mouth.
In 1959 the cause of Down Syndrome was discovered to be due to the trisomy 21. Down syndrome or trisomy 21 was first described by the british doctor John Langdon Down in 1866 and also happens to be named after him.
No, they usually cannot. Down syndrome usually causes the male to be infertile. Though there have been some cases of a man with DS fathering a child.
No. Downs Syndrome is a genetic disorder.
You have the terms reversed. Chromosomes, or the genes within them, cause Downs Syndrome
Im not sure i think so??
No, down syndrome is caused by a genetic defect where there is an extra chromosome in most,if not all, of the cells of a body. it is not caused by a drug.
it is caused by an extra chromosome 21
trisomy 21 is down syndrome.
a human man has two pairs of 23 chromosomes, in total 46. there are cases where there is an extra chromosome in the 23rd spot of chromosomes in this case the man will have an extra chromosome, this is the cause of syndrome of down.
No walking up and down stairs will not cause fetal death.
Nobody really knows exactly what causes Down Syndrome. Down Syndrome is a condition where a baby is born with an extra chromosome in their DNA. There is some evidence that says having a baby at an older age (40 and above) may have a higher risk of having a Down Syndrome baby. Taking medicines cannot cause you to develop Down Syndrome, because it's something you are born with; however, taking addictive drugs while you are… Read More
no, it is caused by a triplication of the 21st chromosome.
The majority of Down syndrome cases are not hereditary. Only in cases of Translocation Down syndrome is this then possible. These inherited cases then occur because one of the parents is a carrier. A carrier will have 45 chromosomes instead of 46 but they will have all the genetic material of a person with 46 chromosomes. Remember that in Translocation Down syndrome the extra chromosome 21 material is located on a different chromosome. A carrier… Read More
There isn't exactly a "Down Syndrome gene". Down Syndrome is properly called trisomy 21; it's a defect where there are three, rather than two, copies of chromosome 21 present in the cell nucleus. In some cases the "extra" copy may be only partial.
Down syndrome is neither caused by dominant or recessive chromosomes it is simply caused by an error in the translation process of chromosome 21.
People with Down syndrome have an extra copy of chromosome 21 in every cell. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis, when sex cells form. Hope this helps!!
The genotype of Down Syndrome is Trisonmy 21. It is caused when there is a nonjusduction in the choromsome in meiosis. (During meiosis, the chromosomes don't separate correctly). A person with Down Syndrome has three choromsomes in the 21 pair. Hopefully, that's what you wanted.
Down syndrome mainly affects the persons physical features but it also affects their learning abilities.
Sir john Langdon Down is credited with discovering Down's Syndrome. He first described it as a separate condition, but Jerome Lejeune discovered its chromosomal cause.
== == * I did some research and learned that men with Down syndrome are usually sterile. Most women can get pregnant and have children. Since there is a high risk of Down syndrome in the baby (35%-50%), many times the pregnancy would end in a miscarriage. But many Down syndrome people have had children. * Technically yes, but it's unlikely. Fertility is greatly reduced in both males and females with Down syndrome, although there… Read More
FAS, Down Syndrome, Spina Bifida
Can cause down syndrome
In certain cases, yes. Amniocentesis is the method commonly used to find out.
The Occurrence of Down Syndrome Most of the time, the occurrence of Down syndrome is due to a random event that occurred during formation of the reproductive cells, the ovum or sperm. As far as we know, Down syndrome is not attributable to any behavioral activity of the parents or environmental factors. The probability that another child with Down syndrome will be born in a subsequent pregnancy is about 1 percent, regardless of maternal age… Read More
approximately half of the offspring of someone with Down syndrome also have the syndrome themselves
Down Syndrome is a chromosomal condition. The characteristics are intellectual disability and birth defects (including heart, digestive, etc.). The disease may cause some medical risks.
Down Syndrome is AKA Trisomy 21. there are 3 autosomes on the 23 chromosome. it isn't x linked, but is randomly mutated and in some cases autosomal.