Atlas Blue Butterfly Has 229 Pairs of Chromosomes, Scientists Find

Sep 11, 2025 - 13:30
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Atlas Blue Butterfly Has 229 Pairs of Chromosomes, Scientists Find
The Atlas blue butterfly (Polyommatus atlantica). Image credit: Roger Vila.

Scientists at the Wellcome Sanger Institute and the Institut de Biologia Evolutiva in Spain have sequenced the genome of a female Atlas blue butterfly (Polyommatus atlantica) and found that it has 227 pairs of autosomes and four sex chromosomes, the highest number of chromosomes out of all multicellular animals in the world.

The post Atlas Blue Butterfly Has 229 Pairs of Chromosomes, Scientists Find appeared first on Sci.News: Breaking Science News.

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