Aneuploidy is the presence of an abnormal number of chromosomes in a cell

It does not include a difference of one or more complete sets of chromosomes

It consists of:

Triploidy-When there are 69 chromosomes


  • It consists of 47 chromosomes with a single extra chromosome
  • Trisomy can be of any chromosome like 13, 16 or 21.
  • If it is of chromosome 21 then it is k/a down syndrome.

Monosomy-When it consists of 45 chromosomes

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