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jan 1, 1955 - Joe Hin Tjio

Description:

This scientist worked on counting chromosomes and was the first to accurately count the number of chromosomes in a typical human cell. He counted the chromosomes from a photograph of human embryonic lung tissue in 1955.

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Genetics History Timeline

ByHallie Reeve
12 Dec 2018
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Date:

jan 1, 1955
Now
~ 70 years ago

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