[Guille]

Originally Posted by AntonioLao

I have read the book and seen the movie 'Jurassic Park'. It mentioned that by nature all living things are basically females but by some unknown biological process, some of them became males.

I've also seen the film. Actually, the dinosaurs start reproducing only females. Or was it all males? I can't really remember, the last time I saw the movie I was 10 years old. But I think they have managed to explain already, why some become males, haven't they? (The film is quite old).