The karyotype of the zebrafish (Brachydanio rerio).

Abstract

Fertilized eggs of the age of 24 hr from the zebrafish (Brachydanio rerio) were examined. The number of chromosomes is 2n = 50. The size of a metaphase chromosome is 1.5-2 microns. The karyogram of the zebrafish is characterized by metacentric and submetacentric, but only few acrocentric chromosomes.