Menu Home

The parent of all life

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.

Hydrothermal vent

NOAA [Public domain], via Wikimedia Commons

Note, though, that it was not the first life, nor was it the only life at the time; it’s just the last lifeform that we’re all descended from. Note also that we can guess at what this lifeform may have been, but it’s all based on inference rather than (for example) a specific fossil.

Categories: Plants & animals Sciences

The Generalist

I live in Auckland, New Zealand, and am curious about most things.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: