Gonadal Dysgenesis Reveals Sexual Dimorphism in the Embryonic Germline of Drosophila
AUTOR(ES)
Wei, G.
RESUMO
In hybrid dysgenesis, sterility can occur in both males and females. At 27.5°, however, we found that P element-induced germline death was restricted to females. This sex-specific gonadal dysgenesis (GD) is complete by the first larval instar stage. As such, GD at 27.5° reveals the sexually dimorphic character of the embryonic germline. The only other known dimorphic trait of the embryonic germline is the requirement for ovo. ovo is required for germline development in females only and has been implicated in germline sex determination. Dominant mutations of ovo partially suppressed female GD. Although embryonic germ cells are undifferentiated and morphologically indistinguishable between males and females, the functional dimorphism seen in ovo requirement and GD at 27.5° indicates that sexual identity in Drosophila germ cells is established in embryogenesis.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1204567Documentos Relacionados
- Gonadal Dysgenesis Reveals Sexual Dismorphism in the Embryonic - Germline of Drosophila
- Temperature-dependent gonadal hybrid dysgenesis in Drosophila willistoni
- Gonadal hybrid dysgenesis in Drosophila sturtevanti (Diptera, Drosophilidae)
- Hybrid Dysgenesis in DROSOPHILA MELANOGASTER: Sterility Resulting from Gonadal Dysgenesis in the P-M System
- Gonadal Dysgenesis Determinants in a Natural Population of DROSOPHILA MELANOGASTER
