Before revision: Neo-sex chromosomes and Dosage compensation The monarch butterfly Danaus plexippus belongs to the order Lepidoptera and has 30 chromosomes one of which is a neo-sex chromosome which is the result of a fusion between one of the sex chromosomes and an autosome.
After revision: Neo-sex chromosomes and dosage compensation The monarch butterfly Danaus plexippus belongs to the order Lepidoptera and has 30 chromosomes one of which is a neo-sex chromosome which is the result of a fusion between one of the sex chromosomes and an autosome.