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lamprey genesLive Science
•79% Informative
Study: Lampreys have a cell population that was key to the origins of vertebrates.
Researchers compared lamprey genes with a group of jawed, aquatic frogs called Xenopus .
A stem cell-regulating gene called pou5 was not expressed in the neural crest cells of lampreys.
This may have limited the ability of those cells to create the head and jaw.
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