Question

In molecular biology, who proposed that genetic information flows in one direction?

• A. Hargobind Khorana
• B. Francis Crick
• C. Watson and Crick
• D. Marshall Nirenberg

Hint:

The central dogma of molecular biology, proposed by Francis Crick, describes the unidirectional flow of genetic information from DNA to RNA to proteins.

Answer 1

The Correct Option is B

Step 1: The concept of the flow of genetic information is central to molecular biology and is often referred to as the central dogma of molecular biology.
- The central dogma states that genetic information flows from DNA to RNA to protein, and it is unidirectional.
- This theory was first proposed by Francis Crick in 1957.
Step 2: The central dogma suggests that genetic information flows in the following direction:
- DNA \(\rightarrow\) RNA \(\rightarrow\) Protein.
- This directional flow was a groundbreaking idea that helped to establish the basic framework of molecular biology.
Step 3: Conclusion:
Thus, the person who proposed that genetic information flows in one direction is Francis Crick, making the correct answer option (B).