I’m just starting the Cell Cycle/Cell Divison topic with Year 12.
I usually kick off with a question along the lines of what they were like when they first started life’s journey. Yes, that’s right, a zygote. A fertilised egg.
I draw a little cell on the board.
So what did that cell have to do in order to become you?
Again, correct; it had to divide.
I draw two little cells on the board.
And divide again.
I draw four little cells on the board.
What’s it become now?
No longer a zygote, but not yet a fetus, you’re an embryo. And so on. Until there’s roughly 50 trillion of…
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