For me that's a better explanation than "poof". but to each his own. If that debate could be settled, it would have been by now.

Hold up, what do you think happend?

We build new bacteria this way. So billions of years, trillions upon trillions of iterations later (with the majority front loaded) it's a reasonable way to see things.

Looks suspiciously like a chain through time to me though 😉

No

It basically happened to each of us in 9 months between conception and birth. Single cell to fully formed human.