German doesn't have different words for "gender" and "sex". It's always "Geschlecht" (and you would translate either of the English words to it a few years ago). So you couldn't even say something like "A woman is when the gender and the sex of a person is female" in German.

Of course the mentally ill now started talking about "biologisches Geschlecht" (biologic - if referring to sex) and/or just use the word "gender" in German.