Chromosomes, Human, 21-22 and Y

**Definition:** The short, acrocentric human chromosomes, called group G in the human chromosome classification. This group consists of chromosome pairs 21 and 22 and the Y chromosome.

**Tree numbers:** - A11.284.187.520.300.505 - G05.360.162.520.300.505

**Synonyms:** - Chromosomes G - Group G Chromosomes