The difference between fish and humans: scientists answer century-old developmental question

Embryologists at UCL have helped solve an evolutionary riddle that has been puzzling scientists for over a century. They have identified a key mechanism in the initial stages of an embryo's development that helps differentiate more highly evolved species, including humans, from less evolved species, such as fish. The findings of the research, funded by the Biotechnology and Biological Sciences Research Council, were published online today by the journal Nature.

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