It’s becoming more common to freeze human eggs. The implications are interesting. A woman can freeze eggs when she is young for later use, obviously. What if a young woman learns that she is not able to have children? Could she choose to be implanted with eggs her sister has frozen? Sure, that seems okay. What about eggs her mother chose to freeze decades earlier? The baby could be someone’s daughter and granddaughter at the same time. But still just a baby. I imagine these things will all happen within families, if they haven’t already. What about buying and selling eggs though? What about a couple paying a stranger to have their genetic child because they are just too busy or don’t want to be bothered with a pregnancy. That’s slightly more troubling, but I’m sure that too will happen if it hasn’t already.