Gepostet vor 5 Jahren, 8 Monaten in
Wired hat einen schönen Artikel über Jack Horner, der Dinosaurier aus Hühnchen bauen will und dessen TED-Talk ich vor ein paar Wochen erst hier hatte.
So making a chicken egg hatch a baby dinosaur should really just be an issue of erasing what evolution has done to make a chicken. “There are 25 years of developmental biology underlying the work that makes Horner’s thought experiment possible,” says Carroll, now a molecular biologist at the University of Wisconsin-Madison. Every cell of a turkey carries the blueprints for making a tyrannosaurus, but the way the plans get read changes over time as the species evolves.
All Horner had to do was learn how to control the control genes. He had spent decades studying fossilized dinosaur embryos, tracking in minute detail the structural and cellular changes in their skeletons as they grew. Now he immersed himself in what biologists had figured out about the molecular control of those changes. Horner reads scientific papers the way he hunts for fossils—scanning a barren landscape for rare bits of useful material—and he has found enough of them to feel optimistic.
Vorher auf Nerdcore:
Building a dinosaur from a chicken: Jack Horner on TED