Karyological Study of Honeybee

Abstract

SummaryThe karyotype of Apis mellifera is illustrated and described, using mitotic chromosomes. The chromosome complement in the haploid male (n 16) could be divided into the two groups: 8 metacentrics and 8 submetacentrics. The longest metaphase chromosome was about 4·3 μm long, and the shortest 1·3 μm, after in vitro pretreatment with colchicine. The secondary constriction was clearly seen in the longest chromosome.