The concept of sudden genetic change which breeds true in a species is represented as

Options

A. Mutation
B. Law of inheritance
C. Inheritance of acquired character
D. Natural selection

Answer

To solve the question, "The concept of sudden genetic change which breeds true in a species is represented as," we will analyze the options provided and identify the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Question**:
- The question asks for a concept that describes a sudden genetic change that can be consistently passed on (breeds true) within a species.

2. **Analyzing the Options**:
- **Option 1: Mutation**:
- Mutation refers to a sudden and permanent change in the DNA sequence of an organism. These changes can lead to variations in traits and can be inherited by future generations. This option fits the description of a sudden genetic change that breeds true.
- **Option 2: Flow of Inheritance**:
- This term generally refers to the transmission of genetic traits from parents to offspring. It does not specifically denote a sudden change, so this option is incorrect.
- **Option 3: Inheritance of Acquired Characters**:
- This concept, proposed by Lamarck, suggests that traits acquired during an organism's life can be passed on to offspring. However, it does not involve sudden genetic changes and is not widely accepted in modern genetics, making this option incorrect.
- **Option 4: Natural Selection**:
- Natural selection is a process where organisms better adapted to their environment tend to survive and produce more offspring. While it can lead to changes in a population over time, it does not specifically refer to sudden genetic changes. Therefore, this option is also incorrect.

3. **Conclusion**:
- After analyzing all the options, the correct answer is **Mutation**. It is the only concept that describes a sudden genetic change that can breed true in a species.

### Final Answer:
The concept of sudden genetic change which breeds true in a species is represented as **Mutation**.