C
Calliso
Guest
Well personally I donlt know anyone that makes a point to draw the line between a two day old embyro and a 10 day old one for instance. But some people do draw the line at heart beating for instance which I know is very early something like just a few weeks in right? Others draw it at the line when the baby is viable has a good chance of surviving outside the womb others might divide it at the brain and nervous system forming. But yeah it can get complicated.Also keep in mind that once the egg is fertilized and a human comes into existence with unique DNA, that human spends up to almost 2 weeks floating around before implanting into the uterus. In fact, the human will go through several key stages of development.
So, I guess if you want to draw a line between a 6 month old fetus and an 8 week old embryo, you could also draw a line between a 3 day old blastocyst and a 10 day old zygote.
That’s such a complicated thing to do, though, don’t you think? How would you draw a line between a 1 year old infant and a 5 year old child, or a 12 year old preteen and a 16 year old teen? At what point do they stop being in one stage and go on to the next?