all of them
#21
chromosome 4
The chromosomes which are affected in Turner's Syndrome is the sex chromosomes. A normal female individual has 2 X sex chromosomes. In Turner's Syndrome, a woman only has one X chromosome and is missing the other. Thus, a woman with Turner's Syndrome has the sex chromosomes X0.
chromosome 21
Either chromosome 13 or 7. Mostly 13
Forty-seven. In Down syndrome, there is an extra 21st chromosome. It is also known as Trisomy 21.
Yes, Non-disjunction occurs when sex chromosomes fail to separate. This occurrence leads to variable numbers of chromosomes and the manifestation of developmental diseases such as Down syndrome, Turner syndrome, etc.
Mutations in the COL11A1, COL11A2 and COL2A1 genes Found on wikipedia chromosome 1
Most of the Klinefelter Syndrome affected persons can lead a life which could be considered as normal. However, they might have certain problems related to sexual organs, (among others), and some, - but not all -, could be infertile. The reason for this is their extra chromosome. Females have XX chromosomes, Males have XY chromosomes, and Klinefelter syndrome affected males have XXY chromosomes. They often are prescribed testosterone therapy. More info could be found on related links.
Yes. A karyotype will show the chromosomes and an affected person will have XXY instead of XY for a normal male.
Trisomy means having three copies of a chromosomes. Turner's syndrome is NOT an example of trisomy. Someone with Turner's syndrome has only one X chromosome. Down's syndrome IS an example of trisomy. Someone with Down's syndrome has 3 copies of chromosome 21. Klinefelter's syndrome is a tricky one. On one hand, it would be considered trisomy because they have 3 sex chromosomes. However, they are not all the SAME sex chromosomes. Someone with Klinefelter's has 2 X chromosomes and one Y chromosome.