Biology / Unit 4 Bio 0863 short lesson, about 20 seconds
Anaphase
Captions available
The idea
Anaphase is the stage where cohesin proteins degrade, sister chromatids separate at the centromere, and each resulting chromosome is pulled rapidly toward its pole.
In practice
The moment cohesin breaks down, each chromatid becomes an independent chromosome, and the cell elongates as the two sets separate.
Where people slip
A chromatid is called a chromosome only after separation — the terms are not interchangeable before anaphase.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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