Where does this come from, and can I check it?

Pressure from amniotic fluid shapes permanent friction ridge patterns. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a human body fact?

Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Fingerprints develop before birth and remain unique for life

Pressure from amniotic fluid shapes permanent friction ridge patterns

Friction ridge patterns on fingertips form during the second trimester of fetal development. Influenced by genetics, movement, and localised amniotic fluid pressure in the womb, these distinct loops, whorls, and arches remain unchanged throughout a person's entire lifetime.

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: fingerprints, skin, genetics

Fingerprints develop before birth and remain unique for life: the short answers

Where does this come from, and can I check it?: Pressure from amniotic fluid shapes permanent friction ridge patterns. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?: Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.