Life
Frogs have acquired DNA from snakes with the help of parasites
Horizontal DNA transfer, once thought to be a rare event, has occurred between snakes and frogs at least 54 times in the past 85 million years
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Horizontal DNA transfer, once thought to be a rare event, has occurred between snakes and frogs at least 54 times in the past 85 million years
The Cambrian explosion 500 million years ago saw a huge variety of animals evolve – and also led to carbon being buried in the seabed and ultimately carried into the planet’s mantle