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1 Jan 1891 Jahr - Hans Dreisch split a fertilized sea urchin egg which was at the two-cell division stage by hand. Each cell subsequently developed into two small but identical sea urchin larva.

Beschreibung:

His research was carried on by Hans Spemann in Germany and Ross Harrison in the US.

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DNA History

ByLizzy Cabbage
11 Okt 2017
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Datum:

1 Jan 1891 Jahr
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~ 134 years ago
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