DNA Base Pair Counter

About the DNA Base Pair Counter

The DNA Base Pair Counter counts nucleotides (A, C, G, T) and base pairs (A-T, G-C) in a DNA sequence. DNA consists of two complementary strands forming a double helix, where adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G) via hydrogen bonds. This tool is ideal for molecular biology students, researchers, and educators.

• Features:
  • Counts individual nucleotides (A, C, G, T) and calculates base pairs (A-T, G-C).
  • Validates input to ensure only A, T, C, G (case-insensitive) are processed; ignores spaces.
  • Displays results with a bar chart showing nucleotide frequencies.
  • Supports calculation history, result copying, and PDF export via LaTeX.
  • Keypad for easy input of A, T, C, G, with clear and backspace functionality.
• Practical Applications: Useful in genetic analysis, DNA sequencing, forensic science, and calculating %G-C content for melting temperature studies.
• How to Use:
  • Enter a DNA sequence (e.g., ATCG) in the input field or use the keypad.
  • Click "Count" to compute nucleotide counts and base pairs.
  • View results, bar chart, and optionally copy or export to PDF.
  • Use "Clear" to reset or "⌫" to delete the last character.
• Helpful Tips:
  • Input is case-insensitive; "atcg" and "ATCG" are equivalent.
  • Spaces are ignored; invalid characters (e.g., X, 1) trigger an error.
  • Click history items to reuse previous sequences.
  • For large sequences, paste directly into the input field.
• Examples:
  • Example 1: Simple Sequence:
    • Input: ATCG
    • Result: A: 1, T: 1, C: 1, G: 1; A-T pairs: 1, G-C pairs: 1
  • Example 2: Repeated Bases:
    • Input: AATTCCGG
    • Result: A: 2, T: 2, C: 2, G: 2; A-T pairs: 2, G-C pairs: 2
  • Example 3: Invalid Input:
    • Input: ATCX
    • Result: Error: Invalid characters detected (X).

Analyze DNA sequences with ease and share or export results for your research or classroom!