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A single fertilized egg splits into four identical embryos every time. The figure is taken from Encyclopædia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Animals 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.

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Mondo Knows Facts

Nine-banded armadillos almost always give birth to identical quadruplets

A single fertilized egg splits into four identical embryos every time.

Nine-banded armadillos exhibit obligate polyembryony, meaning a single egg cell fertilised during mating divides twice to form four genetically identical quadruplets of the same sex. They share a single placenta during embryonic development.

Where this comes from

Encyclopædia Britannica

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Tags: armadillo, mammals, genetics

Nine-banded armadillos almost always give birth to identical quadruplets: the short answers

Where does this come from, and can I check it?: A single fertilized egg splits into four identical embryos every time. The figure is taken from Encyclopædia 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 animals fact?: Yes. It sits on the Animals 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.