Select the correct statement form the following

Options

A. Mutations are random and directional
B. Darwinian variations are small and directionless
C. Fitness is end result of the ability to adapt and get selected by nature
D. All mammals excepts whales and samels have seven cervical vertebrae

Answer

To solve the question of selecting the correct statement, we will analyze each statement provided and determine its validity step by step.

### Step-by-Step Solution:

1. **Analyze the first statement: "Mutations are random and directional."**
- **Explanation:** Mutations are changes in the genetic material and are generally considered to be random events. They do not have a specific direction or purpose; hence, they are described as non-directional.
- **Conclusion:** This statement is **false**.

2. **Analyze the second statement: "Darwinian variations are small and directionless."**
- **Explanation:** Darwinian variations can be both continuous and discontinuous. Continuous variations can be unidirectional, meaning they can show a trend in one direction. Therefore, this statement is misleading.
- **Conclusion:** This statement is **false**.

3. **Analyze the third statement: "Fitness is the end result of the ability to adapt and get selected by nature."**
- **Explanation:** Fitness in the context of natural selection refers to the reproductive success of an organism. It is indeed the result of an organism's ability to adapt to its environment and be selected by nature for survival. This statement aligns with the principles of natural selection.
- **Conclusion:** This statement is **true**.

4. **Analyze the fourth statement: "All mammals except whales and camels have 7 cervical vertebrae."**
- **Explanation:** Most mammals, including whales and camels, have 7 cervical vertebrae. The only exception is the manatee (also referred to as a cow), which has 6 cervical vertebrae. Therefore, this statement is incorrect.
- **Conclusion:** This statement is **false**.

### Final Answer:
The correct statement is: **"Fitness is the end result of the ability to adapt and get selected by nature."**