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24,000-year-old 'zombies' revived and cloned from Arctic permafrost

Posted: Mon Jun 07, 2021 8:21 pm
by Time_Traveller
about 2 hours ago

Tiny zombies that were frozen in Arctic permafrost for 24,000 years were recently brought back to life and have produced clones in a lab in Russia.

These hardy creatures are bdelloid rotifers, or wheel animals, so-named for the wheel-like ring of tiny hairs that circle their mouths. Rotifers are multicellular microscopic animals that live in freshwater environments, and they've been around for about 50 million years.

In that time, rotifers have picked up a survival trick or two.

Researchers previously found that modern rotifers could be frozen at minus 4 degrees Fahrenheit (minus 20 degrees Celsius) and then revived up to 10 years later. Now, scientists have resuscitated rotifers that froze in ancient Siberian permafrost during the latter part of the Pleistocene epoch (2.6 million to about 11,700 years ago). Once thawed, these ancient rotifers began reproducing asexually through parthenogenesis, creating clones that were their genetic duplicates. ... vived.html