Complex sex-linked translocation heterozygosity: Its genetics and biological significance.

Chromosomal translocations (interchanges and fusions) can alter linkage and random assortment when present in the heterozygous condition. In certain circumstances, this heterozygosity can be maintained through an indefinite number of generations. Sex-linked translocation heterozygosity, in which males are perpetually heterozygous for translocations while females are perpetually homozygous, is disproportionately frequent in social and eusocial arthropod species. This article surveys the reported instances of sex-linked translocation heterozygosity, and reviews recent explanations for the observed correlation with social behaviour.
(Copyright © 1987. Published by Elsevier Ltd.)