An abnormality involving a chromosome Number that is not an exact multiple of the haploid number (one chromosome set is incomplete). Organisms that possess that lack 1 or possess 1 extra chromosome in their chromosome set, such as downs syndrome sufferers who possess 47 chromosomes (46 being the norm in humans), 1 more than the species chromosome Number.

Please contribute to this project, if you have more information about this term feel free to edit this page

This page was last modified on 13 May 2007, at 23:13. This page has been accessed 9,889 times. 
What links here | Related changes | Permanent link