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There are 22 pairs of chromosomes. You have the triple chromosomes at 21 position.
23
It will result 4n cells.Chromosomal number will be doubled from generation to generation. It also will result in abnormal individuals that may not to be able to adapt. Down's Syndrome and Turner's Syndrome are examples of this.
#21
Yes.
A very small number.
The number is the same everywhere.
Down syndrome (trisomy 21) is a disorder associated with an error in the number of chromosomes present. Other examples of disorders associated with an error in the number of chromosomes are Trisomy 18 (Edwards Syndrome), Trisomy 13 (Patau Syndrome), Triple X syndrome, and Klinefelter Syndrome.
down syndrome
Disorders, such as Down's Syndrome, are caused by nondisjunction.
Down syndrome
Down syndrome is generally the preferred spelling, although Down's syndrome is sometimes used in American sources.