Arqueobacteria

Archaebacteria, once thought to be primitive extremophiles, are now recognized as a distinct domain. Initially believed to inhabit only extreme environments, their biochemical and genetic traits are more akin to eukaryotes than bacteria.

How do the biochemical characteristics of archaebacteria compare to those of eukaryotes?

In what way is the genetic makeup of archaebacteria similar to that of eukaryotes?