Domain Eukarya

∞ generated and posted on 2015.12.29 ∞

Taxon containing all organisms whose chromosomes are contained within a nuclear envelope (nucleus).

The cells of members of domain Eukarya possess not only a cell nucleus but an endomembrane system more generally and thus numerous membrane-bound organelles.

Domain Eukarya likely originally formed as a cellular merger between members of domains Archaea and Bacteria. See in particular endosymbiont, endosymbiosis, mitochondria, and endosymbiosis theory as well as cell nucleus and endomembrane system.

Generally, though not entirely, both the cells and organisms more generally making up domain Eukarya tend to be larger than those making the prokaryotic domains.