Select the incorrect statement about VNTRs.

Options

A. For performing DNA fingerprinting DNA is obtained from many cells.
B. Polymerase chain reaction increase the sensitivity of VNTRs.
C. VNTRs are also known as mini - satellites.
D. Size ranges from 0.1 to 20 Kb.

Answer

To solve the question about the incorrect statement regarding VNTRs (Variable Number Tandem Repeats), we will analyze each statement provided in the options.

### Step-by-Step Solution:

1. **Understanding VNTRs**:
- VNTRs are sequences in the genome that consist of short nucleotide sequences repeated in tandem. They are used in DNA fingerprinting and genetic diversity studies.

2. **Analyzing the Statements**:
- **Statement 1**: "For performing DNA fingerprinting, DNA is obtained from many cells."
- This statement is **incorrect**. DNA fingerprinting typically requires DNA from a single source, such as a single cell or tissue sample, rather than many cells.

- **Statement 2**: "Polymerase chain reaction increases the sensitivity of the VNTRs."
- This statement is **correct**. The polymerase chain reaction (PCR) is a technique used to amplify DNA sequences, making it easier to analyze VNTRs.

- **Statement 3**: "VNTRs are also known as mini satellites."
- This statement is **correct**. VNTRs are often referred to as mini satellites due to their size and structure.

- **Statement 4**: "Size ranges from 0.1 to 20 kb."
- This statement is **incorrect**. The size of VNTRs typically ranges from 10 to 100 base pairs, not from 0.1 to 20 kilobases (kb).

3. **Conclusion**:
- The incorrect statements about VNTRs are Statement 1 and Statement 4. However, since the question asks for a single incorrect statement, we can conclude that Statement 1 is the most relevant as it directly relates to the context of DNA fingerprinting.

### Final Answer:
The incorrect statement about VNTRs is: **"For performing DNA fingerprinting, DNA is obtained from many cells."**