Question

Which organism was used to detect the presence of thymidine on the newly formed DNA in 1958?

(a) Vivrio cholerae

(b) Treponema pallidum

(c) Vicia faba

(d) Escherichia coli

This question was addressed to me by my college director while I was bunking the class.

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

Answer 1

Correct choice is (c) Vicia faba

Explanation: Taylor and his colleagues conducted an experiment on Vicia fabain 1958. They used radioactive thymidine to detect the distribution of newly synthesised DNA in the chromosomes of the cells. They proved that the DNA which is present inside the chromosomes replicate semi conservatively.