First-ever demonstration of artificial embryo twinning (2 janv. 1885 – 31 déc. 1885)

Description:

Dreisch showed that by shaking two-celled sea urchin embryos, it was possible to separate the cells. Once separated, each cell grew into a complete sea urchin. This showed that each cell has its own complete set of genetic instructions and can grow into a full organism.

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