The short repeating sequence of DNA useful in DNA fingerprinting are

Options

A. VNTR
B. Codons
C. Introns
D. Exons

Answer

To solve the question regarding the short repeating sequences of DNA useful in DNA fingerprinting, we can follow these steps:

### Step 1: Understand DNA Fingerprinting
DNA fingerprinting is a technique used to analyze DNA based on its uniqueness among individuals. Each person has a unique DNA profile, which can be used for identification purposes.

**Hint:** DNA fingerprinting relies on the uniqueness of DNA sequences among individuals.

### Step 2: Identify Key Components
In DNA fingerprinting, specific sequences of DNA are analyzed. These sequences can show similarities or differences between individuals, especially between parents and their offspring.

**Hint:** Look for sequences that can vary between individuals but may be similar among family members.

### Step 3: Recognize the Importance of Repeating Sequences
The sequences that are particularly useful in DNA fingerprinting are known as Variable Number Tandem Repeats (VNTRs). VNTRs are short nucleotide sequences that repeat in tandem and can vary in length among individuals.

**Hint:** Focus on sequences that repeat and can differ in number between individuals.

### Step 4: Differentiate from Other DNA Sequences
Other DNA sequences like codons and introns do not serve the same purpose in DNA fingerprinting. Codons are sequences that correspond to amino acids during protein synthesis, while introns are non-coding sequences within genes.

**Hint:** Eliminate options that do not relate to the uniqueness of DNA profiles.

### Step 5: Conclude the Correct Answer
Based on the analysis, the short repeating sequences of DNA that are useful in DNA fingerprinting are indeed the VNTRs.

**Final Answer:** The short repeating sequence of DNA useful in DNA fingerprinting are the Variable Number Tandem Repeats (VNTRs).

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