Dental formula of elephant is

Options

A. `(1.0.3.3)/(0.0.3.3)`
B. `(1.0.0.3)/(1.0.0.3)`
C. `(1.0.2.3)/(1.0.1.3)`
D. `(2.0.3.3)/(1.0.3.3)`

Answer

To determine the dental formula of an elephant, we need to follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Teeth**:
- In elephants, the types of teeth include:
- I: Incisors
- C: Canines
- P: Premolars
- M: Molars

2. **Count the Teeth in the Upper Jaw**:
- The dental formula for the upper jaw is:
- 1 Incisor (I)
- 0 Canines (C)
- 3 Premolars (P)
- 3 Molars (M)
- This gives us a total of:
- 1 + 0 + 3 + 3 = 7 teeth in the upper jaw.

3. **Count the Teeth in the Lower Jaw**:
- The dental formula for the lower jaw is:
- 0 Incisors (I)
- 0 Canines (C)
- 3 Premolars (P)
- 3 Molars (M)
- This gives us a total of:
- 0 + 0 + 3 + 3 = 6 teeth in the lower jaw.

4. **Calculate the Total Number of Teeth**:
- To find the total number of teeth in the elephant, we need to add the teeth from both jaws:
- Upper jaw: 7 teeth
- Lower jaw: 6 teeth
- Total = 7 + 6 = 13 teeth in one half of the jaw.
- Since we need the complete formula, we multiply by 2 (for both halves):
- Total teeth = 13 * 2 = 26 teeth.

5. **Write the Dental Formula**:
- The complete dental formula for the elephant can be summarized as:
- Upper jaw: 1 0 3 3
- Lower jaw: 0 0 3 3
- Thus, the dental formula is written as:
- **1 0 3 3 / 0 0 3 3**

### Final Answer:
The dental formula of an elephant is **1 0 3 3 / 0 0 3 3**.

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