How does Down syndrome occur with no history of Down syndrome in the family history?
It's either a mutation with the gene, or either the mother or father donates an extra chromosome.
True, and Down Syndrome is not a genetic disease and has nothing to do with family history.
By the way, the kind of chromosomal mistake that causes Down Syndrome occurs in many people, but on different chromosomes. Mostly, your body is so tolerant of this kind of mistake that you never see any results.
having a family history of AD, Down syndrome, or Parkinson's disease Read More
Down Syndrome is a the addition of an extra chromosome and not really related to evolution. It is more of a genetic mutation that causes this event to occur. Read More
Chlamydia does not cause Down syndrome in future pregnancies. Read More
Should you worry about the results of your amniocentesis if nobody in your or your husband's family has Down syndrome?
Yes! Down Syndrome is not a genetic disease. ANYBODY can be born with Down Syndrome, even if 100 or 0 people in their family have it. Read More
One of the times a mutation causing down syndrome can occur is during meiosis, when the ovum becomes a zygote. Sorry I don't know more. Read More
During meiosis Read More
yes. if that is true, then that means that down syndrome is genetic in your family. try researching it up. look it up on google. i highly reccomend wikepedia. the more you know, the more able you will be to understand these poor kids. allison386 Calling them "poor kids" is offensive. Down syndrome is a relatively common, and random, genetic variation--unless it is of the translocation type, which is a lot less common and is… Read More
In 5% of Down syndrome cases, a translocation that occurred in previous generations between Chromosome 21 and 14 is the cause. Read More
Is it advisable to have a test for amniocentesis if there is no history of Down syndrome either in your own family or in your husband's family?
I've always heard that you should not get an amniocentesis in this case. There is a chance it could damage the baby. I've had 3 children and I wouldn't do it unless there was a history of something serious. Read More
If you have no history of birth defects in your family, such as Down Syndrome, and your eggs are free of inflictions, then yes, most likely. Read More
It could be possible to live a normal life if you have Down Syndrome if you get alot of support from family, friends, anyone close to you really Read More
it happens when chromosomes don't separate correctly during meiosis Read More
What do human egg cells have in common with human sperm cells Read More
Some of the conditions that occur more often among children with Down syndrome include: heart defects, vision problems and hearing loss. Read More
What are some organizations throughout the world that can help a family cope with a child with Down syndrome?
The Global Down Syndrome Foundation would be a good place to start. Read More
Down's syndrome is increased with advanced maternal age, which is defined as more than 35 years of age. Read More
I have a sis with down syndrome and she has taught me to be glad for little things, to be more compassionate, and more patient and loving. I love my sister! Read More
Usually they live with their supportive family. Read More
passed down by family memebers Read More
Down Syndrome (Not 'Down's') occurs when a gene has the wrong number of alleles. There are many such birth defects that never show up because your body has a large tolerance for small differences. Not so in Down Syndrome, though. Down syndrome occurs anywhere, and is more prevalent the older a woman is when she gets pregnant. Read More
Experts recommend genetic counseling for persons with a family history of Down syndrome who wish to have a baby. A woman's risk of having a child with Down syndrome increases as she gets older. The risk is significantly higher among women age 35 and older. Couples who already have a baby with Down syndrome have an increased risk of having another baby with the condition. Tests such as nuchal translucency ultrasound, amniocentesis, or chorionic villus… Read More
approximately half of the offspring of someone with Down syndrome also have the syndrome themselves Read More
Im pretty sure its passed down by family members. Read More
They child will be slow mentally and will need extra attention. Read More
No, there is not. Down syndrome is unique in its characteristics and scientific identification. 2nd Answer: Sort of . . . there are other 'mistakes' that occur for the same reason that Down syndrome occurs, and many of them are named. The thing is, though, that the body has such a high range of tolerance of all its hormones, enzymes, and so forth, that these other 'mistakes' never show up to be recognized. Down syndrome… Read More
== == No, there is no cure -- as of yet. Down syndrome is caused by having three of Chromosome 21 instead of the healthy two. There is no way to remove an extra chromosome, especially not from every cell in the whole body! The older the mother is, the more likely this is to occur. If the mother is 40 or older when she conceives, her chances of having a baby with Down skyrocket… Read More
Down syndrome is characterized by an extra copy of Chromosome 21. For each chromosome, there are two copies, one from the mother, and one from the father. During meiosis the number is reduced to one set of chromosomes. People with Down syndrome have an extra copy of chromosome 21, or part of it. Read More
It occurs when a person has either an extra Y-chromosome, or an extra X-chromosome. Read More
People get morquio's syndrome by inheriting it. Both sides of the family have to have. There mom and dad don't, but maybe a relative further down the line. Read More
It is named after John H. Edwards, who first described the syndrome in 1960. It is the second most common autosomal trisomy, after Down Syndrome, that carries to term. Read More
Most cases of down syndrome are not inherited. Translocation Down syndrome can be inherited. Read More
No, you cannot. Down syndrome is a syndrome that is with you from birth. Read More
That depends. Men with Down syndrome have been shown to be sterile, while women with Down syndrome are capable of carrying a child, with 50% likelihood that the child will be born with Down syndrome. Read More
At age 30, for example, a woman has about a 1 in 900 chance of conceiving a child with Down Syndrome. Those odds increase to about 1 in 350 by age 35. By 40 the risk rises to about 1 in 100. It occurs by going through fermentation and supplies alcohol in the brain resulting in down syndrome. Read More
Down Syndrome and Turner Syndrome are two completely different places. Even though this is not how i found out, the clue is in Down Syndrome and Turner Syndrome. Read More
Down Syndrome is an inherited condition. You cannot "get" Down Syndrome, it isn't contagious. A person is born with it. Read More
Because as much as you love this child, it puts a burden and added stress on the whole family. The brothers and sisters become a little jealous because the down syndrome child require more and special attention. Family members are required to learn how to care for this special child and there might be some resentment feelings at times. Read More
According to the Canadian Down Syndrome Society there are approx 35,000 Canadians with Down Syndrome. Read More
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. Read More
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