Did poop enable the evolution of complex animals?
In a recent study, evolution gets even messier than usual.
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Not just Neanderthals: Ghost lineage in Africa left its mark on our DNA
Some group with no modern descendants contributed a lot to our genomes.
Artificial cell manages a few rounds of cell division
It only works for a few divisions thanks to a lot of added materials.
Early land animals skipped the tadpole phase
Current amphibian development may not have been typical of early land vertebrates.
Cockroaches scurry around with thousands of pieces of bacterial genomes
Transferring genes across species doesn't just happen in microbes.
The first complex cells had genes from a complex mix of species
Our ancestors' genomes were built through successive waves of gene transfers.
Protein in Homo erectus teeth suggests Denisovans gave us some of their DNA
Distinct form of tooth protein in Homo erectus shows up in Denisovans—and us.