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What Happens When You Put Evolution on Replay?

A team of scientists from the University of Arizona have engineered an instant replay switch for evolution. The technique, known as ancestral gene resurrection, inserts ancient genes into modern E. coli bacteria. It gives researchers the opportunity to watch evolution unfold again and again, providing insights into how life evolved on early Earth, and what it might potentially look like on other planets. “Organisms can function just fine even when they’ve been engineered with an essential gene that is over 700 million years old,” the study’s lead author Betül Kaçar, an astrobiologist at the University of Arizona, tells Astrobiology Magazine. “This work is a proof of concept. The next questions are: How far back can we go? And would we expect the sequences to evolve and function the same way that they did? Just because sequences are similar doesn’t mean that the gene will function in the same way.”

Kaçar and colleagues published their work in the Journal of Molecular Evolution.

Read the full article here.

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