Random DNA Regions Generator

Generate DNA sequences with defined regions of different compositions for modeling complex genomic structures

Configure Regions

Region 1

What are DNA Regions?

DNA regions are sections of a sequence with distinct compositional properties. Real genomes have regions with varying GC content, CpG islands, AT-rich introns, and GC-rich exons. This tool lets you create sequences mimicking these structures.

How to Use This Tool

Create multi-region sequences in three steps:

  1. Add regions with specific length and GC content
  2. Configure multiple regions to build complex structures
  3. Generate and download your custom sequence

When to Use

This tool is useful when you need to:

  • Test algorithms with sequences of varying composition
  • Model promoter regions, exons, and introns
  • Create control sequences for experiments

Example Configuration

Typical gene structure:

Region 1: 200bp, 70% GC (promoter) Region 2: 500bp, 45% GC (exon) Region 3: 300bp, 35% GC (intron)

Example Output

Generated sequence structure:

GCGCCGCGATCG...ATGCTGACC...ATTATATAAA...

Total length: 1000bp with distinct regional composition.

FAQ

Q: What does GC content control?
A: The percentage of G and C nucleotides vs A and T in each region.

Q: Can regions overlap?
A: No, regions are concatenated sequentially in the order added.