Nucleoproteins gave first sign of :

Options

A. Species
B. Evolution
C. Life
D. None

Answer

### Step-by-Step Solution:

1. **Understanding Nucleoproteins**: Nucleoproteins are complex molecules made up of nucleic acids (like DNA or RNA) and proteins. They play a crucial role in the storage and expression of genetic information.

2. **Abiogenesis and Formation of Organic Compounds**: The concept of abiogenesis refers to the natural process of life arising from non-living matter. In primitive seas, simple organic compounds formed through various chemical processes.

3. **Formation of Coacervates**: These simple organic compounds then aggregated to form coacervates, which are large spherical colloidal aggregates. Coacervates are significant because they can encapsulate other molecules and create a microenvironment conducive to chemical reactions.

4. **Synthesis of RNA**: Within these coacervates, different combinations of pyrimidine and purine nucleotides led to the synthesis of RNA. RNA is essential as it can store genetic information and catalyze biochemical reactions.

5. **Polymerization of Amino Acids**: Simultaneously, amino acids began to polymerize to form proteins. Proteins are vital for various cellular functions, including catalysis (as enzymes).

6. **Formation of Self-Replicating Nucleoproteins**: The chance association of proteins and nucleic acids resulted in the formation of self-replicating nucleoproteins. This marked a significant step in the evolution of life as these nucleoproteins could replicate and pass on genetic information.

7. **Transformation into Living Cells**: The combination of nucleoproteins and the formation of a surface membrane around coacervates transformed these non-living aggregates into the first living cells.

8. **Conclusion**: Therefore, nucleoproteins gave the first sign of life, marking the transition from non-living chemical systems to living organisms.

### Final Answer:
Nucleoproteins gave the first sign of **life**.

---