Notes on the systematics of the orchid-bee genus Eulaema (Hymenoptera, Apidae). The classification of the genus Eulaema is modified in order to make it congruent with recent phylogenetic hypotheses ...

Remipedia are rare and ancient mandibulate arthropods inhabiting almost inaccessible submerged cave systems. Their phylogenetic position is still enigmatic and the subject of extremely controversial ...

Allele: a variant segment of the genetic material. Diploid organisms will have two potential alleles for any particular stretch (gene, sensu latu) of DNA (e.g., a 'normal' and a 'mutant' allele for ...