Sex determination , the establishment of the sex of an organism, usually by the inheritance at the time of fertilization of certain genes commonly localized on a particular chromosome. This pattern affects the development of the organism by controlling cellular metabolism and stimulating the production of hormones that trigger the development of sexual glands or organs. An excess or lack of hormones during embryological development may cause an individual to develop the superficial appearance of one sex while retaining the genetic constitution of the other sex. Sex determination Article Media Additional Info.
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A Guide to Determining Your Face Shape (If That’s Something You Care About)
Are you trying to break into aquaculture industry or already working in the field and looking to gain additional expertise for career development? The Nile tilapia O. Illustrations from Egyptian tombs suggest that Nile tilapia were cultured more than 3, years ago. Tilapia have been called Saint Peter's fish in reference to biblical passages about the fish fed to the multitudes. The Nile tilapia is still the most widely cultured species of tilapia in Africa.
Metrics details. Sex chromosomes change more frequently in fish than in mammals or birds. However, certain chromosomes or genes are repeatedly used as sex determinants in different members of the teleostean lineage.