Evolutionary biology hypothesizes the existence of a single form of life that is the ancestor of all life currently on Earth: the last universal common ancestor (LUCA). This is supported by the fact that all modern life shares the same amino acids (from a much wider possible range). In fact, by finding genetic commonalities and patterns across a wide range of lifeforms we can hypothesize that this ancestor probably lived on a hydrothermal vent.
NOAA [Public domain], via Wikimedia Commons
Categories: Plants & animals Sciences
The Generalist
I live in Auckland, New Zealand, and am curious about most things.
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