Female sperm and gay guinea pigs

While gay families and their supporters await the California Supreme Court's ruling on the constitutionality of a voter-approved law banning same-sex marriage, a few researchers and pundits are proposing that same-sex procreation with bio-engineered gametes will undermine one of the key arguments of same-sex marriage opponents.

These technological enthusiasts are portraying a recent biological experiment with artificial gametes as a breakthrough that will one day enable gay and lesbian couples to have children who are genetically related to both of them. Some media reports have described the step toward "female sperm" as a portent of gay freedom. "Good news for lesbians," the lead of one story gushed.

Well, maybe not. The news accounts and enthusiasts haven't raised the question of whether equality can be engineered in a test tube or discrimination solved with a technical fix. Nor have they pointed out that procreation with artificial gametes would be a biologically extreme measure that would pose enormous risks to any resulting children. While speculation about using such constructs in humans typically includes the standard disclaimer - "assuming this is shown to...