1Aneuploid
individual with an error in chromosome number; includes chromosome segment deletions and duplications
2Autosome
any of the non-sex chromosomes
3Euploid
individual with the appropriate number of chromosomes for their species
4Karyogram
a karyotype's photographic image
5Karyotype
an individual's chromosome number and appearance; includes the size, banding patterns, and centromere position
6Monosomy
an otherwise diploid genotype in which one chromosome is missing
7Nondisjunction
failure of synapsed homologs to completely separate and migrate to separate poles during meiosis (I or II)
8Trisomy
an otherwise diploid genotype in which one entire chromosome duplicates