Biology / Bio 1543 · Atom · ~20 seconds

"A Clone Is a Perfect Identical Copy"

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A reproductive clone is not a perfect identical copy of its donor, because mitochondrial DNA, environment, and epigenetic marks all still differ.

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A cloned animal's mitochondrial DNA comes from the recipient egg, not the donor, so its full genome never fully matches the donor's.

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Matching nuclear DNA is not matching every heritable influence — mitochondria, environment, and epigenetics differ too.