On the basis of hereditary material, the most closest relative of man is :

Options

A. Chimpanzee
B. Gorilla
C. (c) Orangutan
D. Gibbon

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the closest relative of humans based on hereditary material. This involves comparing the DNA similarities among various primates.

2. **Identifying the Candidates**: The candidates mentioned are chimpanzees, gorillas, orangutans, and gibbons. All these species are primates and share a common ancestry with humans.

3. **Analyzing DNA Similarity**:
- **Chimpanzees**: They have approximately 98.6% to 99% DNA similarity with humans. This high percentage indicates a very close genetic relationship.
- **Gorillas**: They show about 98% DNA similarity with humans, which is slightly lower than that of chimpanzees.
- **Orangutans**: Their DNA similarity with humans is around 97%, indicating a more distant relationship compared to chimpanzees and gorillas.
- **Gibbons**: They have about 96% DNA similarity with humans, making them the least similar among the listed primates.

4. **Conclusion**: Based on the analysis of DNA similarities, chimpanzees exhibit the highest percentage of genetic similarity to humans. Therefore, they are considered the closest relatives of humans in terms of hereditary material.

5. **Final Answer**: The most closest relative of man, based on hereditary material, is the chimpanzee.

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