Women allowed themselves to become property because pregnancy possesses and enslaves them

Source: the dispossessed by ursula k leguin p. 464 Takver suggests that she pressured Shevek to let Sabul fuck up his book because she was pregnant, and pregnant pepole "have no ethics." She thinks this is why women used to allow themselves to be treated as property: they were pregnant. Pregnancy "possesses" and "enslaves" them.