Absence of W Chromosome in Psychidae Moths and Implications for the Theory of Sex Chromosome Evolution in Lepidoptera.

ABSTRACT: Moths and butterflies (Lepidoptera) are the largest group with heterogametic females. Although the ancestral sex chromosome system is probably Z0/ZZ, most lepidopteran species have the W chromosome. When and how the W chromosome arose remains elusive. Existing hypotheses place the W origin either at the common ancestor of Ditrysia and Tischeriidae, or prefer independent origins of W chromosomes in these two groups. Due to their phylogenetic position at the base of Ditrysia, bagworms (Psychidae) play an important role in investigating the W chromosome origin. Therefore, we examined the W chromosome status in three Psychidae species, namely Proutiabetulina, Taleporiatubulosa, and Diplodomalaichartingella, using both classical and molecular cytogenetic methods such as sex chromatin assay, com

SUBMITTER: Hejnickova M 

PROVIDER: S-EPMC6947638 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature