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.