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All nucleotide sequence information has been published and made available from the Gene bank. Accession numbers: Abstract The estimation of maturity and sex of fish stocks in European waters is a requirement of the EU Data Collection Framework as part of the policy to improve fisheries management. On the other hand, research on fish biology is increasingly focused in molecular approaches, researchers needing correct identification of fish sex and reproductive stage without necessarily having in house the histological know-how necessary for the task. Taking advantage of the differential gene transcription occurring during fish sex differentiation and gametogenesis, the utility of 5S ribosomal RNA 5S rRNA and General transcription factor IIIA gtf3a in the molecular identification of sex and gametogenic stage was tested in different economically-relevant fish species from the Bay of Biscay. Degenerate primers permitted cloning and sequencing of gtf3a fragments in 7 of the studied species.Physical/Biological - Look/Sex Personality/Emotional – Feel/Sex Societal/ Occupational H1: Masculine (feminine) self-identification is likely to characterize males (females). Allison, Neil K., L.L. Golden, G. M. Mullet, and D. Coogan. Elucidation of the sex-determination mechanism in flathead grey mullet (Mugil cephalus) is required to exploit its economic potential by. researchers needing correct identification of fish sex and . the identification of sex in thicklip grey mullets during their whole annual...the end of the story look at the video above ↑ ↑ ↑

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