If referring to a set of twins where one is a boy and one is a girl then the masculine term prevails, gemelos updated OCT 24, 09 posted by Eddy 3 votes From the Span¡shD!ct dictionary twin sustantivo 1 gemelo(a) (sustantivo masculino o femenino) twin brotherThe couple, who met on ABC's "The Bachelor," welcomed boy/girl twins on The babies joinDoctors in Australia say they have identified a second case of twins apparently created from one egg and two sperm, a boygirl combination in whom the mother's DNA is identical in both babies but
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