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Chromosomal DNA replication starts at a specific sequence called an origin of replication. Until recently, all archaeal organisms were thought to require origins to replicate their chromosomes. It was recently discovered that some species do not utilize origins of replication under laboratory growth conditions.
Kelman, L.
and Kelman, Z.
(2018),
Do archaea need an origin of replication?, Trends in Microbiology, [online], https://doi.org/10.1016/j.tim.2017.12.001
(Accessed December 7, 2023)