Frequency and distribution of associations of acrocentric chromosomes in human lymphocytes

: Frequency and character of the distribution of acrocentric chromosome associations are determined in 40 phenotypically healthy native inhabitants of the Latvian SSR (20 males and 20 females). The ability to associations is the lowest for chromosomes 15 and 22 and the highest for chromosomes 21, 14 and 13. It is found that a tendency to associations between chromosomes 21-21 (P less than 0.05) and 13-21 (P less than 0.01) is not of an accidental character.