Eggs over Pregnancy or Vice-Versa?

In an infertility clinic there are typically two kinds of commercial arrangements- a donor who provides her eggs to another woman and relinquishes rights over the offspring and a surrogate who is implanted  with somebody else’s eggs and who subsequently gives up rights over the newborn.

There is a dichotomy in the standards we apply to explain these two situations-in one we say a gestational pregnancy determines motherhood. In the other situation we say the exact opposite saying that genetics take precedence over a pregnancy. 

Associate Professor at the John Dossetor Health Ethics Centre Dr Laura Shanner says that it is the commercialisation of assisted reproduction that perpetuates this dichotomy: