Here's why:
* Somatic cells are any biological cells forming the body of a multicellular organism other than gametes, germ cells, gametocytes or undifferentiated stem cells.
* Normal human somatic cells are diploid, meaning they contain two sets of chromosomes (2n), for a total of 46 chromosomes. Each set has 23 chromosomes.
* Aneuploidy is a condition in which the number of chromosomes in a cell is not a multiple of the normal haploid number (23 for humans). This can happen due to errors during cell division, such as non-disjunction.
Examples of aneuploid conditions include:
* Trisomy 21 (Down syndrome): Individuals have an extra copy of chromosome 21 (47 total chromosomes).
* Monosomy X (Turner syndrome): Individuals have only one X chromosome (45 total chromosomes).
