But beyond this, all the tensions between Elsa and Clive get acted out in relation to Dren, and are directly projected onto Dren. They live for their cutting-edge research, and dont seem to have much in the way of lives outside.
In a matter of days their creation is ready to be born, and looks like gigantic sperm. Male Dren wants to enter/penetrate/fuck/rape Elsa; but also, perhaps, he wants to return to the womb, to an ultimate inner place where the outside world cannot harm him. And males, of course, must always be aggressive and fight one another.