According to modern evolutionary biology, all living beings could be descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth. Common descent is an effect of speciation, in which multiple species derive from a single ancestral population.All living things on our planet, including us humans, evolved from the same origin according to science. This would be the Earth’s original ancestor, a 3.8-billion-year-old organism named LUCA (last universal common ancestor). After all, we’re all made of cells that have common traits like ribosomes and a genetic code that is believed to go back to this one single entity.
