One of those situations where one size definitely doesn't fit all, as far as answers go.

I didn't intend to tweak you with the abortion analogy, but if one is going to treat an unborn child as the total property of the mother, or as an individual human being with rights, then there are some consequences in staying consistent on either side of that.

The right to kill a fetus with no legal consequence certainly implies the right to experiment on one. Legally, it seems like a mother could get pregnant with the intent to abort and harvest cells or organs from the fetus, never mind experiment on its genetics.

The issue of older children is much more complicated, and comes up in many different cases, such as refusing conventional medical care for religious reasons, or other situations where society has to decide where the rights of parents start and end. The line is not a clear one.