Question

Taylor conducted the experiments to prove semiconservative mode of chromosome replication on

• A. E. coli
• B. Vinca rosea
• C. Vicia faba
• D. Drosophila melanogaster

Answer 1

The correct option is C Vicia faba

J.H.Taylor in 1958 conducted experiments to prove the semi-conservative nature of DNA replication on the actively dividing meristematic cells of Vicia faba.

He selected root-tip cells and treated them with radioactive thymidine till both the chromatids of all the chromosomes of dividing cells became radioactive.

Then the cells were grown in normal media. In the next generation, one chromatid of each chromosome was labelled while the other was normal.This highlighted the fact that DNA replication occurs in a semi-conservative way.

Hence, the correct answer is option C.