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 Atlas blue butterfly (Polyommatus atlantica). Image credit: Roger Vila. The Atlas blue butterfly is found in the mountain...
