The DNA finger printing relies on

Options

A. Difference in patterns of genes between individuals
B. Difference in order of genes between individuals
C. Difference in junk DNA Patterns between individuals
D. All of these

Answer

To solve the question regarding what DNA fingerprinting relies on, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding DNA Fingerprinting**:
- DNA fingerprinting is a technique used to identify individuals based on their unique DNA profiles. It is particularly useful in forensic science, paternity testing, and genetic research.

2. **Identifying Key Components**:
- The technique relies on specific sequences of DNA that are unique to each individual. These sequences are often found in non-coding regions of the DNA, which do not contribute to the production of proteins.

3. **Role of Mini-Satellites**:
- Alec Jeffreys, a British scientist, discovered that certain regions of DNA, known as mini-satellites, are highly variable among individuals. These regions consist of repeating sequences that can differ in length and number from one person to another.

4. **Non-Coding DNA**:
- The non-coding regions, often referred to as "junk DNA," do not have a known function in coding for proteins. However, they contain variations that can be used to differentiate between individuals.

5. **Conclusion**:
- Therefore, DNA fingerprinting relies on the differences in the patterns of these non-coding sequences (junk DNA) between individuals. This is the basis for identifying unique DNA profiles.

### Final Answer:
DNA fingerprinting relies on the differences in junk DNA patterns between individuals.