Sentence:  A much more common condition caused by early exposure of fish larvae to oestrogenic substances is <WSD>intersex</WSD>, which in males usually takes the form of ovotestis. 
Meaning of the word marked with <WSD> tags:  Any of a variety of conditions (in a dioecious species) whereby an individual has male and female sex characteristics; the state of having the physical features of both sexes; intersexuality.