Euploidy vs. Aneuploidy

Euploidynoun

(genetics) The condition of having a chromosome number that is an exact multiple of the haploid number for the species.

Aneuploidynoun

(genetics) The condition of being aneuploid; the state of possessing a chromosome number that is not an exact multiple of the haploid number of the organism in question.

Aneuploidynoun

an abnormality involving a chromosome number that is not an exact multiple of the haploid number (one chromosome set is incomplete)

Aneuploidy

Aneuploidy is the presence of an abnormal number of chromosomes in a cell, for example a human cell having 45 or 47 chromosomes instead of the usual 46. It does not include a difference of one or more complete sets of chromosomes.