Question

The unequivocal proof of DNA as genetic material come from studies on a

• A. Viroid
• B. Bacteriophage
• C. Bacterium
• D. Fungus

Answer 1

The correct option is B Bacteriophage

The unequivocal proof of DNA as the genetic material came from studies on bacteriophages which are also known as bacterium viruses. T${}_2$ is the bacteriophage that infects Escherichia coli which are a bacterium. A.D. Hershey and Martha Chase proved that genetic material of T${}_2$ bacteriophage is DNA.

So, the correct answer is option B.