• Sciara as an experimental model for studies on the evolutionary relationships between the zygotic, maternal and environmental primary signals for sexual development

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      https://www.ias.ac.in/article/fulltext/jgen/089/03/0325-0331

    • Keywords

       

      evolution of sex-determining mechanisms; zygotic sex determination; maternal sex determination; environmental sex determination; chromosome elimination; chromosome imprinting; Sciara.

    • Abstract

       

      Sex determination refers to the developmental programme that commits the embryo to either the male or the female pathway. There are a plethora of mechanisms via which gender is decided. These mechanisms can be classified into three main categories depending on the origin of the primary, genetic, sex-determination signal, which can be zygotic, maternal or environmental. In the dipteran Sciara, the zygotic signal is a consequence of the maternal signal, and this in turn can be a consequence of the environmental signal. This makes Sciara a unique experimental model for studying the evolutionary relationships between the three primary signals triggering sexual development.

    • Author Affiliations

       

      Lucas Sánchez1

      1. Centro de Investigaciones Biol´ogicas (C. S. I. C.), Ramiro de Maeztu 9, 28040 Madrid, Spain
    • Dates

       
  • Journal of Genetics | News

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