The haplodiploidy hypothesis proposes that the unusual ​3⁄4 relatedness coefficient amongst full haplodiploid sisters is responsible for the frequency of evolution of eusocial behavior in hymenopterans.
A hipótese da haplodiploidía afirma que o coeficiente de parentesco inusual de 3/4 entre irmás haplodiploides completas é responsable da frecuencia da evolución do comportamento eusocial nos himenópteros.