Dental formula in human beings is

Options

A. `(3223)/(3223)`
B. `(2123)/(2123)`
C. `(1232)/(1232)`
D. `(2233)/(2233)`

Explanation

To determine the dental formula in human beings, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Dental Formula**: The dental formula is a way to represent the number and types of teeth in the mouth. It indicates how many of each type of tooth are present in one half of the mouth (either upper or lower jaw).

2. **Types of Teeth**: In humans, there are four main types of teeth:
- **Incisors**: These are the front teeth used for cutting food.
- **Canines**: These are pointed teeth next to the incisors, used for tearing food.
- **Premolars**: These are flat-topped teeth located behind the canines, used for grinding food.
- **Molars**: These are larger teeth at the back of the mouth, also used for grinding food.

3. **Counting Teeth**: An adult human typically has a total of 32 permanent teeth, which are distributed as follows:
- 8 Incisors (4 in the upper jaw and 4 in the lower jaw)
- 4 Canines (2 in the upper jaw and 2 in the lower jaw)
- 8 Premolars (4 in the upper jaw and 4 in the lower jaw)
- 12 Molars (6 in the upper jaw and 6 in the lower jaw)

4. **Dental Formula Representation**: The dental formula is represented by counting the number of each type of tooth in one half of the mouth (upper or lower jaw). The standard arrangement is:
- Upper Jaw: 2 Incisors, 1 Canine, 2 Premolars, 3 Molars
- Lower Jaw: 2 Incisors, 1 Canine, 2 Premolars, 3 Molars

5. **Final Dental Formula**: Therefore, the complete dental formula for humans is:
- Upper Jaw: 2-1-2-3
- Lower Jaw: 2-1-2-3
- Combined, this is often written as: **2/1/2/3 (upper) and 2/1/2/3 (lower)**.

### Final Answer:
The dental formula in human beings is represented as **2/1/2/3 for both the upper and lower jaws**.

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