But if Phoebe took "essence" from her brother, wouldn't the baby(s) be, well, disabled? That tends to happen but I think I may have missed a few plot points. If dedicated fans could explain, I'd appreciate it.
shareTo quote Phoebe, "[Alice and Frank] want me to be the surrogate. It's her egg and his sperm. I'm just the oven. It's totally their bun." :)
shareSomeone having a mental issue doesn't by default mean that their offspring will be too.
A perfectly healthy person could have a child with mental problems. A person with mental problems could have healthy children. In the words of Kramer, "Mother nature is a mad scientist." Frank's kids could very well surpass his mental capabilities when they enter high school.
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"But my job's fun too - I mean, tomorrow I don't have to wear a tie." - Chandler