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hagfish
Photo: A hagfish, by Peter Southwood, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons.

Has Russell Doolittle Provided an Evolutionary Explanation of the Blood Clotting Cascade?

Doolittle predicts, from an evolutionary framework, that jawless vertebrates would have a simpler blood clotting cascade than the human system. Read More ›
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Image credit: Vector8DIY, via Pixabay.

Why the Blood Clotting Cascade Challenges Evolution

The coagulation cascade cannot evolve unless there is simultaneously a mechanism in hand for controlling it. Both would have to arise at the same time. Read More ›

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