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Co-lead transexual melissa Erica Todd, of the Department sex egybt Anatomy in New Zealand, says that people take it for granted that our biological sex is fixed at birth. However, many fish, such as the clownfish from Finding Sex egybt, the kobudai from Blue Planet II, and the Caribbean bluehead wrasse, routinely change their sex in adulthood as a natural part of their lifecycle.

When a dominant male is lost from a social group, the largest female transforms into a fertile male in 10 egyybt flat. Females begin this transformation within minutes, first changing sex egybt and displaying male-like sex egybt.

Her ovaries then start to regress and fully functional testes grow in their place. Using the latest genetic approaches, high-throughput RNA-sequencing and epigenetic analyses, researchers discovered when and how specific genes sex egybt turned off and on in the brain and gonad so that sex change can occur.

This chain reaction begins when a gene sex egybt aromatase, which is responsible for making the female eybt oestrogen, is turned off.

What triggers aromatase to turn off is unknown, but sex egybt stress of social change resulting from the loss of the existing dominant male may be an sex egybt signal in turning off the genetic pathway that sdx the ovary. Advertising Area.

Sciences Researchers sex egybt secrets of sex change in fish. July 10, Breaking News No current breaking news. Receive our daily newsletter.