DNA finger printing is useful for study of :

Options

A. Forensics
B. Polymorphism
C. Identity and Relations
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding DNA Fingerprinting**:
DNA fingerprinting is a technique used to identify individuals based on their unique DNA patterns. It involves analyzing specific regions of DNA that vary greatly among individuals.

2. **Application in Forensics**:
One of the primary uses of DNA fingerprinting is in forensic science. It helps establish a link between a suspect and a crime scene by comparing DNA samples found at the scene with those of the suspect.

3. **Role in Polymorphism**:
DNA fingerprinting can also be used to study polymorphism, which refers to the variations in DNA sequences among individuals. This can involve differences in DNA fragment lengths due to the presence or absence of restriction enzyme sites, or due to insertions or deletions in the DNA sequence.

4. **Identity and Relationships**:
Additionally, DNA fingerprinting can determine an individual's identity and biological relationships. By comparing DNA profiles, it is possible to establish familial connections or confirm identity.

5. **Conclusion**:
Given that DNA fingerprinting is useful in forensics, studying polymorphism, and determining identity and relationships, the correct answer to the question is "all of this".

**Final Answer**: All of this.

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