Blastocyst: – Day 5

Originally uploaded by lounbern

From Embryo: A Defense of Human Life by Robert P. George and Christopher Tollefsen

[There is a] claim made by some supporters of embryo-destructive research that because early-stage embryos can split into identical twins, they are not yet individuals or determinate human beings. (Pg. 22)

I don’t think this conclusion necessarily follows.

The only thing the twinning phenomenon changes is how many persons there are, not whether it’s a human person.