Question

By performing the replica plating experiment, Lederberg supported the

• A. Gene mutation theory
• B. Natural selection theory
• C. Lamarck theory
• D. Darwinian theory

Answer 1

The correct option is B Natural selection theory

Replica plating is a technique by which an exact duplicate or replica plate of a master plate can be created. The replica plate on exposure to antibiotics will reveal resistant colonies and strains. Natural selection theory advocates that nature selects best-suited organisms to become parents for next generation. This theory can easily be tested with the help of replica plating. A replica plate exposed to antibiotics will reveal best suited / adapted bacterial colonies.