The genome of D. melanogaster (sequenced in 2000, and curated at the FlyBase database) contains four pairs of chromosomes – an X/Y pair, and three autosomes labeled 2, 3, and 4.
O xenoma de D. melanogaster (secuenciado en 2000, e conservado na base de datos FlyBase) contén catro pares de cromosomas: un par X/Y, e tres pares de autosomas numerados 2, 3 e 4.