The eukaryotes developed at least 2.7 billion years ago, following some 1 to 1.5 billion years of prokaryotic evolution.
Keeping this in view, what cell appeared earlier in history eukaryotic or prokaryotic?
Eukaryotic cellular machinery gives the final clue that prokaryotes existed first. Several organelles in eukaryotic cells, particularly the chloroplasts and mitochondria necessary for metabolism, strongly resemble prokaryotes. They have their own ring-like DNA. They reproduce by binary fission, like prokaryotic cells.
What did the first eukaryotic cells evolved from?
The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.
When did the first prokaryotic cells appear on Earth?