AT FIRST sight, it shouldn’t be alive: a single-celled organism that lacks a lot of the molecular tools wanted to repeat DNA.
Duplicating DNA is key to copy, so DNA replication methods have been regarded as current in all non-parasitic species with complicated cells. But it surely appears they aren’t.
“I used to be astonished,” says Dayana Salas-Leiva at Dalhousie College in Halifax, Canada. The microbe, Carpediemonas membranifera, should have a mechanism for copying its DNA that’s unknown to science.
C. membranifera is a …