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3 - Steven Strogatz: In and out of love with math

The 3b1b podcast

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The Dna Wrapped Around Protein Spools

Dna doesn't just exist floating around in a cell. It's always wound around proteins called nucleus omes that act like spools. The dna was known to wrap like, actually, a confusing number one and three quarters turn around each spool. So how do the different nucleus omes stack in relation to each other? That was the big open question in biology at the time. And so warcell said he had a model for how they sit in relation to Each other. But i don't know how to calculate the linking number of that structure. I went and bought some ribbon then laid it out flat on the floor. You can change the pattern but you won't change the

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