- A DNA has a double helix structure overall
- B DNA, not protein, is the genetic material
- C Chromosomes are the carriers of hereditary genes
- D Enzymes are proteins that catalyze reactions
Correct answer: B. DNA, not protein, is the genetic material
Explanation: Hershey and Chase (1952) used radioactive S (protein) and P (DNA) in bacteriophages. Only P (DNA) entered bacteria, proving DNA is the genetic material.
Concept context
Mendel's laws, inheritance patterns, DNA structure, and molecular biology. Core of NEET biology.
Read the full Principles of Inheritance and Variation notes →