A question:
What happens when the first one is brought to term? We all know that it will eventually happen.
I’m not fatalistic that such a thing will actually happen – there is a distinct possibility that a hybrid of one type of cell with human genes can’t function properly. A cell is after all more than just genes – it is the interplay between genes and the cell wall and cytoplasm based organelles.
For example:
The human body fights off infection in one way by fighting off foreign infection – the most common way of detecting the foreign item is by examining the surface molecular structure of the cell. Since, in the experiment proposed – the cell surface is definitely foreign (non-human) the likely result is that blood cells in the uterine lining will attack it as a foreign invader – the same problem (organ rejection) occurs in animal organ transplants – making them very difficult, if not impossible to achieve.
There is a distinct possibility that non-human oocytes will simply not implant. (The odds may be higher if implanted in the same animal from which the cell originally came from – but then the problem exists that the cell wall may mutate as the cell reproduces… and the animal will reject the human mutations…)
No one has yet made a synthetic uterus – which is one of the major reasons that un-ethical stem cell research has failed so far.
Assuming I’m wrong (a distinct possibility), hypothetically, I don’t even think anyone knows. The Bush administration, a year or two ago, had a web page considering the legal ramifications of such a contingency. I don’t recall the address of the page, but with respect to research already possible in the US, such options such as “forced abortion” are not likely to hold up in court – as I recall. Since Roe V. Wade has other implications. This was one of the main reasons that the ethics page discouraged ever making the implantation legal in the first place – but one of the questions asked is : if it WERE done illegally, what then? Could the court force an execution then? ( Probably not, but no one knows – it depends on the balance of privacy, vs. human – vs. not human – vs. all kinds of legally uncharted territory… )