Down Syndrome

no you cannot down syndrome cannot be spread.

The cause of Down's Syndrome is trisomy of 21st chromosome.This was first described by LANGDON DOWN. The external features of victim:- 1. Short stature 2. Small round head 3. Big,furrowed tongue 4. Palm is broad with unusual palm crease. The affected person's mental development is retarded and usually has congenital heart disease.

people with down syndrome are often riddled with vision impairments...

A few are.

The "epicanthic fold" -- also called epicanthus -- is a fold of skin on the upper eyelid that partially covers the inner corner of the eye. Some people with Down syndrome manifest such a fold.

Yes.

When a baby is born from two parents with 47 chromosomes, the chromosomes of each parent will split into 23 and 24 chromosomes. This makes three posibilities under conception:

1. 23 from mom and 24 from dad, or vice versa: There's a 50% chance for this, and this will give the baby 47 chromosomes, so it'll have Down Syndrome like its parents.

2. 24 from each parents. In this case it won't work, because a human being can't possibly live with 48 chromosomes. So 25% chance that there won't be a baby that can possibly survive.

3. 23 from each parent. There's a 25% chance for this, which mean that the baby won't have down syndrome.

So overall: 75% chance for normal baby, because people with Down Syndrome are no less normal than other people. And 25% chance for a baby that can't possibly survive through conception, and that's what I would call an abnormal baby.

And if the baby do survive through conception, these are the odds:

2/3 chance that the baby will have Down Syndrome.

1/3 chance that it won't.

100% chance for a normal baby :)

Or maybe 0% chance for normal baby? Because normal is relative, right?

Down syndrome (trisomy 21) occurs when a gamete carrying an extra copy of chromosome 21 is involved in a fertilization event.


The gamete (whether sperm or oocyte) has an extra copy of chromosome 21 because of something called NONDISJUNCTION. This happens when a chromosome gets pulled to the wrong daughter cell.

This can happen either in meiosis I or meiosis II.

If nondisjunction happens in meiosis I, 2 gametes will be n+1 (have the extra copy of 21) and the other 2 gametes will be n-1 (will have NO copy of 21)

If nondisjunction happens in meiosis II, 2 gametes will be normal, one will be n+1 and one will be n-1.

TRISOMY

Well Down Syndrome is sometimes called Up Syndrome because most kids with Down Syndrome are very happy.
Trisomy 21

It is a chromosomal abnormaility characterized by offspring with short stature, lymphoedema, widely spaced nipples, low hairline, low setted ear and obesity. They may not have menstrual period thus may be sterile. Other symptoms may include a small lower jaw, turned-in elbows, a webbed neck, soft upturned nails and drooping eyelids. Turner syndrome manifests itself differently in each female affected by the condition, and no two individuals will share the same symptoms.

It is caused by abnormal splitting of the egg during Anaphase II of Oogenesis leading to 45 XO chromosomal make up instead of 46 XX or 46 XY.

The female chromosomes (the BARR BODY) is not present and so the X is donated by the sperm (male).

Jenna does.

Down syndrome is caused by an additional chromosome while PKU is due to a mutation or defect in a gene.

A pregnancy with Down Syndrome would be the same as any other pregnancy. But, there's a chance that if the mother finds out that her child has Down Syndrome by having some testing done, she might become depressed.

It is self infliction of wounds or injury to attract attention from doctors or others. There is also Munchausen's by proxy which has a parent or other inflicting harm on a child or other in order to gain attention.

The syndrome is named for the German-American pediatrician Gunnar B. Stickler (1925-). After graduating in medicine in Munich, Stickler emigrated in 1951 to the USA. He worked for many years at the Mayo Clinic in Rochester, Minnesota where he saw a 12-year-old boy with bony enlargement of several joints and severe nearsightedness. The boy's mother was blind. Stickler then discovered that there were other members of the family with similar features. The first family member known to be affected had been seen by Dr. Charles Mayo in 1887. Sticker studied the family and in 1965 with colleagues described what they called hereditary progressive arthro-ophthalmopathy in 5 generations of this family.

A high functioning DS can have an IQ in the 60's most are quite a bit lower.

child development, actually none just be you, get involved spend time, talk w/ parents, talk to a child whom has down syndrome, take continueing education courses, that involve working w/ persons w/ disabilities, volunteer for special olympics. Or obtain a part time job as a respite provider at a group home or an intensive tenant support program. These jobs and volunteer opprtunities will provide training to assist you in being an caring care taker, volunteer or simply a friend. Don't be afraid go ahead get involved make a difference, be a mentor! The first subjuct you need is: The ability to SMILE and say Hello.

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.

chromosome translocation got it right from study island if that is what you are using it for. good luck on future questions

some soial needs are behaviour problems, speak and hearing problems ( this makes it harder to communicate ), they should have people to make friends with.

THANKS :)

Yes, there are support groups and organizations in many parts of the world. Just look on the Internet.

bacteria

I found this: "Moses syndrome (1) A delusion characterized by uncritical belief in the promises of others to lead one to the Promised Land, e.g., to beauty, youth, wealth, power, peace of mind, or happiness. (2) A delusion characterized by the belief that one has been chosen by God, destiny, or history to lead others to the Promised Land, e.g., some goal such as "putting the sciences on a firm foundation" (Descartes) or belief in such things as "the eternal law of nature that gives Germany as the stronger power the right before history to subjugate these peoples of inferior race, to dominate them and to coerce them into performing useful labors" (Hitler)." Here: http://skepdic.com/mosessyndrome.html

Yes, you can call it Trisomy 21 or DS.

Named for the Austrian pediatrician who first described it