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In which organism was the “Semiconservative theory of DNA replication” first observed?

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in Biology – Class 12 by (271k points)
In which organism was the “Semiconservative theory of DNA replication” first observed?

(a) Treponema pallidum

(b) Vibrio cholerae

(c) Staphylococcus pneumoniae

(d) Escherichia coli

I got this question in my homework.

Enquiry is from The Experimental Proof of Replication of DNA topic in division Molecular Basis of Inheritance of Biology – Class 12

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The correct option is (d) Escherichia coli

For explanation I would say: It was proved by Watson and Crick that the DNA replicates semi-conservatively. This was first observed in Escherichia coli. Later, the same concept was observed in plants and human cells too.

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