In her article on transgenerational reproduction, the commentator, Ana Smajdor, points out something very interesting, ironic and important.
She discusses the recent case of the Montreal woman Melanie Boivin, who has frozen some of her eggs so that her 7-year-old infertile daughter Flavie would be able to use them someday. Smajdor points out that this kind of egg donation shows that the mother believes that the genetic link is important in having children. If Melanie Boivin had not thought that it was important to be genetically related to the child, then she wouldn't have frozen her eggs for her daughter to eventually use: "Because of course Flavie, like any other infertile person, could seek to use donated eggs if on reaching adulthood, she found herself longing to start a family."
The irony is that while Boivin believes that it's important for the child to be genetically related to the parent, the reality is that by using her mother's eggs, Flavie will be giving birth not to her own genetic daughter but to her half-sibling: in effect, Melanie Boivin will have a child with Flavie's future husband.
What a screwed up scenario. However, it's not as new as you may think. This has already happened! In her book Everything Conceivable, Liza Mundy mentions a case where the father of an infertile man donated his sperm for the son to use. The son has thus had a baby which is, in reality, his half-sibling.