Common origin of man and chimpanzee is best shown by

Options

A. Cranial capacity
B. Binocular vision
C. Chromosomes
D. Dental formula

Answer

To determine how the common origin of man and chimpanzees is best shown, we can analyze the provided options: cranial capacity, binocular vision, chromosomes, and dental formula. Here’s a step-by-step breakdown of the reasoning:

### Step 1: Understanding Chromosomes
- Humans have 46 chromosomes, while chimpanzees have 48 chromosomes.
- Chromosomes are structures that contain genetic material, and they can provide insights into evolutionary relationships.

**Hint:** Consider how genetic similarities can indicate a shared ancestry.

### Step 2: Analyzing Chromosomal Structure
- The structure of chromosomes can show evolutionary relationships.
- When comparing human and chimpanzee chromosomes, they display near-identical banding patterns, which indicate a close genetic relationship.

**Hint:** Look for evidence that shows how closely related two species are at the genetic level.

### Step 3: Examining Other Options
- **Cranial Capacity:** This refers to the size of the skull and is often associated with intelligence. However, it varies significantly between species and does not directly indicate a common ancestor.

- **Binocular Vision:** While both species have binocular vision, the differences in their visual systems suggest adaptations to different environments rather than a direct common ancestry.

- **Dental Formula:** This refers to the arrangement and number of teeth. While there are similarities, they are not as definitive in showing a common origin as chromosomal evidence.

**Hint:** Evaluate which of the options provides the strongest genetic evidence for a shared ancestry.

### Step 4: Conclusion
- The best evidence for the common origin of man and chimpanzees is found in their chromosomes. The similarities in chromosome structure and banding patterns provide strong support for the idea that humans and chimpanzees evolved from a shared ancestor.

**Final Answer:** The common origin of man and chimpanzee is best shown by **chromosomes** (Option C).