Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50703#.VEmeuFfHRK0 Author(s) Antonina V. Trukhina , Aleksandr F. Smirnov Affiliation(s) Department of Genetics and Biotechnology, St. Petersburg State University, St. Petersburg, Russia . ABSTRACT Sex determination system in birds is characterized by a homo-(Neognatae) and heteromorphic ( Paleognatae ) sex chromosomes. Heterogametic sex is female (ZZ/ZW system). DMRT 1 gene is a gene regarded as a main male sex determining factor in this group of animals. The question remains about the participation of other factors (HEMOGEN, AMH etc.) in appearance of testis, and the role of steroid hormones in formation of ovaries. Complete sex ...
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