Select the correct statement from the following:

Options

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

Answer

To solve the question of selecting the correct statement from the options provided, we can follow these steps:

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The first statement claims that "mutations are random and directional."
- **Evaluation:** Mutations are indeed random; however, they are not directional. They occur without a specific direction or purpose.
- **Conclusion:** This statement is incorrect.

2. **Analyze the Second Statement:**
- The second statement states that "Darwinian variations are small and directional."
- **Evaluation:** Darwinian variations are generally small, but they are not directional. They occur randomly within populations and can lead to evolutionary changes over time.
- **Conclusion:** This statement is also incorrect.

3. **Analyze the Third Statement:**
- The third statement asserts that "fitness is the end result of the ability to adapt and get selected by nature."
- **Evaluation:** This statement is accurate. Fitness in evolutionary biology refers to an organism's ability to survive and reproduce in its environment, leading to the selection of traits that enhance reproductive success.
- **Conclusion:** This statement is correct.

4. **Analyze the Fourth Statement:**
- The fourth statement claims that "all mammals except whales and camels have 7 cervical vertebrae."
- **Evaluation:** While it is true that most mammals have 7 cervical vertebrae, the statement incorrectly implies that only whales and camels are exceptions. Other mammals also have variations in cervical vertebrae.
- **Conclusion:** This statement is incorrect.

### Final Conclusion:
The correct statement among the options provided is the third statement: "fitness is the end result of the ability to adapt and get selected by nature."

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