The entire body of moleculer biology was the consequent development with major contributions from

Options

A. Tansley , Aristotle , Nuremberg , Khorana , Kornberg , Benzer , Monod, Brenner
B. Watson , Crick Humboldt , Darwin, Kornberg, Benzer , Monod , Brenner
C. Watson , Crick , Nuremberg , Khorana , Kornberg ,Erlich , Mendel
D. Watson , Crick , Nuremberg , Khorana , Kornberg , Benzer , Monod , Brenner

Answer

To solve the question regarding the major contributions to the development of molecular biology, we will analyze the contributions of various scientists mentioned in the video transcript.

### Step-by-Step Solution:

1. **Identify Key Scientists**: The first step is to identify the scientists mentioned in the transcript who have made significant contributions to molecular biology. The key scientists include:
- Watson and Crick
- Marshall Nirenberg
- Hargobind Khurana
- Arthur Kornberg
- Seymour Benzer
- Jacob and Monod
- Sydney Brenner

2. **Summarize Contributions**:
- **Watson and Crick**: They proposed the double helix model of DNA in 1953, explaining the structure of DNA as two antiparallel polynucleotide chains with complementary base pairing.
- **Marshall Nirenberg**: He elucidated how DNA transmits information and developed a cell-free system for protein synthesis, demonstrating how RNA is synthesized from DNA.
- **Hargobind Khurana**: He developed a chemical method for synthesizing RNA molecules based on known DNA sequences.
- **Arthur Kornberg**: He contributed to understanding DNA biosynthesis.
- **Seymour Benzer**: He worked on the genetic code of viral genes and introduced the term "cistern."
- **Jacob and Monod**: They elucidated the lac operon, explaining gene regulation and transcriptional activity.
- **Sydney Brenner**: He researched the genetics and behavior of the nematode Caenorhabditis elegans, contributing to our understanding of its genome.

3. **Evaluate Other Options**: The next step is to evaluate the other options provided in the question. The transcript mentions that figures like Aristotle, Darwin, Humboldt, and Mendel, while significant in their own right, did not contribute to molecular biology as we understand it today. Their work predated the molecular understanding of genetics and DNA.

4. **Conclude the Answer**: Based on the contributions of the scientists listed and the evaluation of the other options, the correct answer to the question about the major contributions to molecular biology is option D, which includes Watson and Crick, Nirenberg, Khurana, Kornberg, Benzer, Jacob, Monod, and Brenner.

### Final Answer:
The entire body of molecular biology was the consequent development with major contributions from Watson and Crick, Marshall Nirenberg, Hargobind Khurana, Arthur Kornberg, Seymour Benzer, Jacob and Monod, and Sydney Brenner.

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