|
It comes down to the introduction of nutrients and chemicals at certain times and at certain levels... kind of a crap shoot. Its amazing so many people do come out looking relatively the same... but, that just means somewhere in there its encoded and we don't have a full grasp of how.
Did I remember correctly that the DNA is placed into a host nucleus? This leaves some DNA from the old cell present, the mitochondria. Perhaps this plays a big role in development?
|