Monday, August 9, 2010

The squashed molecule of life

We have a lot of DNA squashed into every one of our cells. Did you ever think about that? Well, now's your big chance! Almost every human has 46 chromosomes in each and every cell of their bodies. Each chromosome, stretched out completely, is several feet long. Wrap your mind around that. Now think about how compact each of those chromosomes gets crammed up into the standard chromosome structure. Here's a visual to assist you:

There's the chromosome- can you make out the strands of DNA packed in there? Coiled around and around those histone proteins . . . I love biology.

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