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Down Syndrome
What a difference an extra chromosome can make. Here we explore the misconceptions -- as well as the ups and downs -- of Down Syndrome, a congenital genetic disorder that is caused by the presence of an extra 21st chromosome. The affected person is mildly to moderately handicapped, short in stature, and has a flattened facial profile.
693 Questions
Down Syndrome most often occurs when-?
Down Syndrome often occurs when chromosomes fail to separate properly during meiosis.
Do you think it should be forbidden for someone with Down syndrome to become a parent?
WikiAnswers contributors share their opinions;
- There is no way a person with Down syndrome could take care of anybody else, let alone themselves.
- Some people with Down syndrome marry. With rare exceptions, men with Down syndrome cannot father a child. In any pregnancy, a woman with Down syndrome has a 50-50 chance of conceiving a child with Down syndrome, but many affected fetuses are miscarried.
Knowing that says that nature is taking care of itself. If two people who love each other have a chance at having a healthy baby, then the best of luck to them. After all, "normal people" have babies with down syndrome and they are loved.
And again I will say that males with Down syndrome are almost all sterile (only 1 case documented). And if a female with Down syndrome becomes pregnant with a viable fetus, the father obviously does not have Down syndrome.
Some people with Down syndrome are able to function and be a lot more independent than others. As to whether it should be forbidden, my answer is this: "HELL, NO!" Didn't you ever watch "Life Goes On"? If so, do you remember Corky?
Is there any syndrome that is similar to Down syndrome?
Some symptoms include intellectual disability, hypothyroidism, and heart defects. Some characteristics of people with Down Syndrome are short stature, weak muscles, slanted eyes, a pushed-in nose bridge, and irregular mouths/tongues.
Will a laboratory test for Down syndrome pick up marijuana in your system?
If the test for this syndrome is a blood test then, maybe. A blood test will detect marijuana. A urine test will also detect marijuana.
What is the budget of National Down Syndrome Society?
The budget of National Down Syndrome Society is 2,000,000 dollars.
What is stiff person syndrome?
Stiff person syndrome (SPS) is an extremely rare progressive neurological disorder characterized by persistent rigidity and spasms of certain voluntary muscles, especially those of legs and feet.
What is the difference between down syndrome and hemophilia?
Hemophilia is a bleeding disorder. It is usually genetic. The body cannot make certain proteins needed for proper clotting of the blood. So even a small wound can present a major risk of bleeding to death, and patients with this have to be given the missing proteins so their blood will clot. Only the blood is affected, not the person's IQ, appearance, nor abilities.
Down Syndrome is a chromosome disorder, where there is an extra copy of chromosome 21. It causes physical and mental retardation, and people with it usually have a certain appearance. Sometimes those born with this can be trained to function on their own and live almost ordinary lives, but most require special care.
No, it is possible for 2 parents with down syndrome to produce a child with no non-disjunction disorder because of a gamete is produced with an extra copy of the chromosomes.
It is a state of mind that may appear to people how are alone in life and are desperate to share with others.
How is Down syndrome transmitted?
Down syndrome is not an infectious disease that is transmitted from one person to another. It is something with which you are born.
How many chromosomes are found in a nerve cell of a down syndrome person?
The same as all of the other cells.
What causes Patau syndrome and how does it differ from Down syndrome?
Patau syndrome is a very rare syndrome caused by a problem in the chromosomes, the structures in the body's cells that contain DNA. The specific chromosomal problem in Patau syndrome is that the cells have three copies of chromosome 13, as opposed to the usual two copies in most people. Because there are three copies of chromosome 13, the condition is also called trisomy 13.
The cause of Patau syndrome is similar to Down syndrome. Like Patau syndrome, Down syndrome is caused by having an extra copy of a certain chromosome. Individuals with Down syndrome usually have an extra copy of chromosome 21. Thus, Down syndrome is commonly called trisomy 21.
Perhaps not surprisingly, the cause of the trisomy in both Patau and Down syndromes is similar. A phenomenon called nondisjunction is responsible for most cases of trisomy 13 and 21. Nondisjunction is an error that can occur during cell division (specifically the cell division process called meiosis). Rather than splitting evenly, cells that have undergone nondisjunction typically split unevently into two cells; one cell receives one extra copy of a chromosome, while the other is deficient in the chromosome.
A major risk factor for nondisjunction is advanced maternal age. The chance of nondisjunction increases significantly once mothers are 35 years old and greater. As you'd expect, the risk of Patau and Down syndromes increases considerably with advanced maternal age. To view photos of children Living with Trisomy 13 - Patau Syndrome http://www.livingwithtrisomy13.org
Can down's syndrome men get erections?
Yes. i down syndrome and i get hard when watch porn and my hot nana
What is cervical facet syndrome?
Il s'agit d'un ensemble de signes et de symptomes pouvants être mis en relation avec une atteinte des facettes vertébrales cervicales. Le facet syndrome cervical n'a pas encore fait l'objet d'une étude descriptive précise comme pour le facet syndrome lombaire. Les auteurs qui en parlent ont souvent extrapolés les grandes lignes du niveau lombaire au niveau cervical tel que l'absence de signes neurologiques ou une douleur souvent unilatérale, puis y ont joint les zones de douleurs projetées et référées cervicales. Si nous comparons les cliniques décrites par les rares auteurs, notons que les signes et symptômes peuvent être corrélés avec la clinique d'un phénomène arthrosique ou encore d'une entorse cervicale benigne. Ces deux pathologies en seraient elle l'origine? U.DERU
Can people with down syndrome feed themselves?
Yes? My cusion has down syndrome and he can do everything you can just fine. He just thinks differently than we do.
How do you get nondisjunction?
You are born with it>>>>>>>>>>>During meiosis, chromosomes are separated equally. When they are notseparated equally - this is known as non-disjunction - the gametes end up with either an extra chromatid or no chromatid. In Down syndrome the offspring carries an extra chromatid in Chromosome 21, aka Trisomy 21
Why is Down syndrome not always correctly detected in pregnancy tests?
Pregnancy screenings for Down syndrome have a 5-8% false positive rate (test comes back positive, but the baby does not have Down syndrome) and a 35-40% false negative rate (test is negative, but baby has Down syndrome). This is due to a number of different factors that the screening depends on, such as the mother's age and weight, the age of the fetus, etc.
Since the tests results come back as risk factors- the chance that the baby will have Down syndrome, for example 1 out of 270- and there is usually an arbitrary cutoff, such as 1 in 250, where the test counts as a "positive", this is why sometimes it is not correct. The "positive" or "negative" depends on chance, and obviously a high chance the fetus has Down syndrome does not necessarily mean it does have it.
What is the percentage of false-positive blood tests for Down syndrome?
"Also note that the way the tests are set up, the serum screening test has a 5 to 8% false-positive rate (see above for the discussion of what this means) and also has a false-negative rate of 35 to 40%, and so will only detect about 60 to 65% of all fetuses with Down syndrome"
It will likely vary based on the mother's age however.
Source:
1) http://www.childbirthsolutions.com/articles/pregnancy/downtesting/index.php
Does Peyton list have down syndrome?
Peyton List is an American actress born on August 8, 1986. She is best known for her role as Jane Sterling on the AMC TV series Mad Men and as Lucy Montgomery on As the World Turns. She does not have Down Syndrome.
What is the most common heart defect amongst people with Down syndrome?
The cardiac defect most commonly associated with Down Syndrome (trisomy 21) is Atrioventricular defect (AVSD). However, those afflicted with Down are may also present with Atrial septal defects (ASD), Ventricular septal defects (VSD), and Tertology of Fallot.
These cardiac defects in general are caused by neural crest development abnormalities (4th branchial arch and 3rd/4th pharyngeal pouches).
AVSD is essentially a combination of ASD and VSD where all 4 chambers of the heart communicate leading to hypertrophy of each chamber. The resultant right to left shunting from AVSD commonly causes congestive heart failure (CHF) due to increased workload on the heart.
Down patients with AVSD may also present with increase pulmonary vascular resistance due to compensatory pulmonary arteriole constriction. This can essentially prevent CHF by lowering right to left shunting but cyanosis will still persist.
-2nd year medical student
Why do people make fun of people who have down syndrome?
Because they're insecure with themselves, and feel "better" by being mean to people that have down syndromes.
