Sample DNA

DNA sequences

LengthNumber of sequences

Output

How to make random DNA with the same composition

Paste a DNA sequence to sample from.
Set the length and number of sequences to make.
Click Generate. Each base is drawn at random from your sequence, so the composition is about the same.

Frequently asked questions

How is this different from Shuffle DNA?

Shuffle keeps the exact counts and length. Sampling draws with replacement, so the length can be anything and the counts vary a little.

Is my sequence uploaded?

No. Everything runs in your browser, so your sequences never leave your device.

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