Genetic Disorders Associated with Meiosis - Lesson 2.5 (terminologies)

Nondisjunction

the process where chromosomes or chromatids fail to separate in both meiosis processes

Sister Chromatids

failed to separate in meiosis II

Homologous Pairs

failed to separated in meiosis I

Aneuploidy

is the presence of an abnormal number of chromosomes in a cell

Monosomy

the absence of one chromosome from a pair, resulting in one copy instead of the instead of the usual two

Trisomy

the presence of an extra chromosome leading to three copies instead of two