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No, that is false. Down syndrome is also known as Trisomy-21. Monosomy is a condition where one chromosome is missing from what should be a pair in every cell throughout the body. Trisomy indicates a chromosome has three copies instead of a pair.
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What do you call it if a person is missing a chromosome?
If a person is missing a chromosome, it is known as monosomy. Monosomy occurs when there is only one copy of a particular chromosome instead of the usual two copies. For example, a person missing one copy of chromosome 21 would have a condition called monosomy 21 or trisomy 21, which is also known as Down syndrome.
What are alternative names for Down syndrome?
== == * Down syndrome is also known as Trisomy 21. In years gone by, it was also known as Mongolism, although that term is no longer used. * It has also been called "Up syndrome" by some people, because children with Down syndrome tend to be happy a lot.
What condition results when a child is born with an extra chromosome on the third pair?
Down syndrome
What causes monosomy?
The l virus that usually causes mononucleosis is the "Epstein-Barr virus". However it can also be caused by "Cytomegalovirus".
How many chromosomes are in a down syndrome affected cell?
Forty-seven. In Down syndrome, there is an extra 21st chromosome. It is also known as Trisomy 21.
Why is monosomy worse than trisomy?
Monosomy occurs when one chromosome is absent from the normal diploid number. This is referred to as aneuploidy which is the loss or gain of a chromosome during meiosis.An example of monosomy is Turner Syndrome. One of the sex chromosomes is missing. In an unaffected female there are 2 'X' chromosomes. But in Turner Syndrome there is one sex chromosome missing.Trisomy occurs when there is three copies of a chromosome instead of the normal diploid number. This is also referred to as aneuploidy because there was an extra chromosome added hence, an abnormal amount of chromosomes.An example of trisomy is in Trisomy 21(Downs Syndrome) in which chromosome 21 has an extra chromosome.
Can Down syndrome be prevented?
Downs Syndrome, also known as trisomy 21, is a chromosomal disorder and, as such, cannot be avoided nor prevented.
What is the scientific name for Down syndrome?
The scientific name for Down syndrome is Trisomy 21, referring to the presence of an extra copy of chromosome 21 in each cell.
By what other names is fragile X syndrome known?
also known as Martin-Bell syndrome, Marker X syndrome, and FRAXA syndrome
What is another name for down syndrom?
Well Down Syndrome is sometimes called Up Syndrome because most kids with Down Syndrome are very happy.Trisomy 21
If an older sibling has Down syndrome will a newborn baby also be born with Down syndrome?
No, this is not necessarily the case.
Can you get Down syndrome?
Down syndrome is a result of a genetic abnormality that is present from the stage of a single fertilized egg. Specifically, it is when the embryo has three copies of chromosome #21 instead of the normal two copies. It is therefore also known as trisomy 21. This being said, you cannot "get" down syndrome - you are either born with it or without it.
