DNA Sequence Analyzer 🧬

A Python-based bioinformatics project that analyzes DNA sequences through a menu-driven interface. The program can read a DNA sequence from a text file or accept user input and perform several common DNA sequence analyses.

Features

• Menu-driven interface
• Analyze DNA from:
  • DNA_Sequence.txt
  • User input
• DNA sequence validation
• Nucleotide counting (A, T, G, C)
• GC content calculation
• AT content calculation
• DNA → RNA transcription
• Complementary DNA generation
• Reverse complementary DNA generation
• Analyze all properties at once

Technologies Used

• Python 3

Project Structure

dna-sequence-analyzer/
│
├── main.py
├── DNA_Sequence.txt
├── README.md
└── .gitignore

How to Run

Clone the repository:

git clone https://github.com/ruhiprasad25-art/dna-sequence-analyzer.git

Move into the project directory:

cd dna-sequence-analyzer

Run the program:

python main.py

Follow the on-screen menu to analyze either the sample DNA sequence or your own DNA sequence.

Sample Output

Number of A: 3
Number of T: 3
Number of G: 4
Number of C: 2

GC Content: 50.00%
AT Content: 50.00%

RNA Sequence:
AUGCGAUUCGGA

Complementary DNA:
TACGCTAAGCCT

Reverse Complementary DNA:
TCCGAATCGCAT

Concepts Practiced

• Python functions
• File handling
• User input
• Loops and conditionals
• String manipulation
• Modular programming
• Basic bioinformatics concepts

Future Improvements

• DNA to protein translation
• FASTA file support
• Export results to a text file
• Graphical user interface (GUI)

Author

Ruhi Prasad