114 place 6

398 This tiny butterfly has the most chromosomes of any animal on Earth

ScienceDaily
ScienceDaily · 09/29/2025 23:31 EDT

Scientists have confirmed that the Atlas blue butterfly carries the most chromosomes of any animal, with 229 pairs. Unlike duplication, its chromosomes split apart, reshaping its genome in surprising ways. This discovery sheds light on evolution, conservation, and even cancer research.

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