Originally Posted by noguru
It basically comes down to historical possibility. He did use common patterns and templates, but it appears He did it though the process we see from the historical evidence.
Clearly God used a genetic replicating system. Amniotic fluid is the same salinity as the ocean - reminiscent that God created life first in the sea. As human fetuses develop it is apparent they have a milk line like other mammals. Sometimes a third or fourth nipple develops on humans - most often along this milk line. Sometimes babies are born with short 3-4" tails where the sacrum is not fused like in "normal" humans. Every once in awhile there are throwbacks like these to man's ancient genetic heritage from other mammals.
Indeed even Genesis tells us: these are the generations of the earth when it was created...