Chromosomes are concerned with

Options

A. Respiration
B. Growth
C. Transmission of hereditary characters
D. Assimilation

Answer

**Step-by-Step Solution:**

1. **Understanding Chromosomes**:
- Chromosomes are fine thread-like structures located in the nucleus of both plant and animal cells. They are composed of DNA coiled around proteins called histones.

2. **Function of DNA**:
- The primary function of DNA within chromosomes is to serve as hereditary material. This means that DNA carries genetic information that can be passed from one generation to the next.

3. **Evaluating the Options**:
- **Option A: Respiration**: This is incorrect. Respiration is primarily associated with mitochondria, not chromosomes.
- **Option B: Growth**: This is also incorrect. Growth is largely facilitated by proteins, which are synthesized by ribosomes and the endoplasmic reticulum.
- **Option C: Transmission of hereditary characters**: This is correct. Chromosomes are indeed responsible for the transmission of hereditary traits due to the presence of DNA.
- **Option D: Assimilation**: This is incorrect. Assimilation refers to how organisms utilize energy, typically in the form of ATP, and is not directly concerned with chromosomes.

4. **Conclusion**:
- Based on the evaluation of the options, the correct answer is that chromosomes are concerned with the transmission of hereditary characters.

**Final Answer**: Chromosomes are concerned with the transmission of hereditary characters.

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