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  1. Article

    Existence of Multiple Sex Genotypes in the Hermaphrodite Polychaete Worm Ophryotrocha puerilis siberti

    IT was demonstrated in 1951 that Ophryotrocha puerilis shows a marked sex variability, as the age when each individual passes from the male to the female sex phase is highly variable. O. puerilis can thus be cons...

    G. BACCI, O. BORTESI in Nature (1961)

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