<span>When cells divide uncontrollably it causes things like mutation or cancer. This is because cancerous cells go through rapid cell division. They do not develop in the same way that healthy cells develop. </span>
The number 45 means that the subject has 44 normal autosomal chromosomes (22 chromosomes pairs) plus one (1) good sex chromosome (out of the normal homologous pair). The X0 means that the subject, usually a female, lacks one sister chromosome of the homologous X chromosome pair, or has a partial X sister chromosome.
