Archaea are now recognized as havin

Archaea are now recognized as having mixed heritage.
The genes for replication, transcription, and translation are
all eukaryote-like in complexity (Doolittle and Logsdon,
1998). However, the genes of intermediary metabolism are
purely bacterial. The Archaeal genome sequencing papers
indicate that the genes for replication, transcription, and
transduction form an enduring cellular hardware, whereas
the other genes for biochemical functions are a type of
software, and prone to change.