A Bird's Eye View of Human Sex Determination

Birds' eye view: a decade of perspectives.

O of Jan Drake’s happy innovations as editor of other significant events (i.e., the first issue of Genetics in 1916). These have fulfilled the retrospective function. Genetics was to initiate the publication of an essay, entitled Perspectives, at the beginning of each issue. The perspective and prospective functions have been achieved by articles that have integrated classic studies His idea wa...

A Birds Eye View on System Identification

System identification is concerned with obtaining good models from data, i.e. with data driven modeling. In this contribution the aim is to explain and discuss ideas, general approaches and theories underlying identification of linear systems. Identification of linear systems is a nonlinear problem and is prototypical also for many parts of identification of nonlinear systems.

Problems of Birds Sex Determination

Sex determination system in birds is characterized by a homo-(Neognatae) and heteromorphic (Paleognatae) sex chromosomes. Heterogametic sex is female (ZZ/ZW system). DMRT1 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 hormon...

The Birds-eye View: Neuropsychology of Adhd

Gonadal asymmetry and sex determination in birds.

Although vertebrates display a superficial bilateral symmetry, most internal organs develop and locate with a consistent left:right asymmetry. There is still considerable debate as to when this process actually begins, but it seems that, at least for some species, the initial steps occur at a very early stage of development. In recent years, a number of model systems, including the chick embryo...