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What chromosomes do you get an extra copy for in humans that results in Down syndrome?
Down Syndrome is caused by a triplication of the 21st chromosome.
Is klinefelter's syndrome caused by a mutation?
No it is caused by the Non-Disjunction of sex Chromosomes. Males with Klinefelter's syndrome have an extra X chromosome.
Down syndrome is usually caused by an extra copy of what chromosome?
Down syndrome occurs because of the extra chromosome on chromosome 21. If you go onto google images and type in karyotype of Down syndrome, you will find a picture of the extra chromosome. Instead of having two chromosomes on chromosome 21, there is an extra. Type your answer here...
Why is it that a mongoloid person have 65 chromosomes?
People with Down syndrome, also called mongoloidism have 47 chromosomes. Having 65 chromosomes would be lethal, as normally having 47 chromosomes is lethal. Down syndrome is also known as trisomy 21, because instead of two copies of chromosome 21, a person with Down syndrome has three copies, which accounts for the 47th chromosome.
What are three disorders caused by missing or extra chromosomes?
1) down's syndrome2) turner syndrome3) jacob's syndrome
Difference between the chromosomes of a person with Down syndrome and a person without Down syndrome?
An individual with Down Syndrome has the presence of all or part of an extra 21st chromosome.
What are examples of genetic disorders that is caused by insertion of extra codons in the x sex chromosome?
The phenomenon of having an extra chromsome is called anueploidy. Depending on the chromosome of which the extra copy exists, there are many disorders.Down Snydrome is the most common disorder associated with an extra autosomal chromosome, but it is not the only one. The other condintions that come from extra copies of an autosome (non-sex chromosome) that result in the most live births are:Edward's Syndrome from an extra copy of 18 andPatau syndrome which is caused by an extra 13.As for sex chromosomes,an extra X chromosome results in Klinefelter's syndrome (XXY) in males andmetafemale or XXX syndrome in women.Males with an extra Y are simply refered to as having XYY syndrome.
Is the extra copy of Chromosome 21 that causes Down syndrome dominant or recessive?
Down syndrome is neither caused by dominant or recessive chromosomes it is simply caused by an error in the translation process of chromosome 21.
Where did down syndrome come from?
Downs syndrome is a genetic abnormality caused by an extra chromosome, in simple terms - as a healthy individual you inherit 22 chromosomes from your mother and 22 from your father, so that's 44 altogether, 1 chromosome from each of your parents will combine to form 22 sets, in a person with Downs syndrome there is an extra abnormally shaped set of chromosomes. So in short a person with Downs syndrome has 23 chromosomes instead of 22.
Are klinefelter syndrome and Turner syndrome results of nondisjunction of autosomes?
No, Klinefelter syndrome and Turner syndrome are the result of nondisjunction of sex chromosomes. Klinefelter syndrome is caused by an extra X chromosome (XXY), while Turner syndrome is due to a missing X chromosome (XO).
Trisomy 21 Down syndrome xxy kleinfelter syndrome and xo turner syndrome are all caused by?
Nondisjunction -Trisomy 21(Down Syndrome) means there are 3 chromosomes on the 21st pair of chromosomes. -Kleinfelters (XXY) means there is an extra chromosome on the 23rd pair(where the sex chromosomes lie). -Turner Syndrome(XO) On the 23rd pair, there is no Y or second X chromosome. The female can survive with this.
What is the term for three chromosomes instead of two?
The term for having three chromosomes instead of the usual two is "trisomy." This condition occurs when there is an extra copy of a chromosome, leading to a total of three copies instead of the normal pair. Trisomy can result in various genetic disorders, the most well-known being Down syndrome, which is caused by an extra copy of chromosome 21.
