DNA double helix is two anti-parallel strands coiled around a central axis, held by complementary base pairing—A with T, G with C. It’s packaged by winding around histones into chromatin, which coils further to fit inside the nucleus. But honestly, studying this in my tiny room above the shop, the miracle isn't the packing—it's how all that information, like a circuit diagram, fits into something so small. It makes me think of my father fitting a full amplifier repair into a matchbox-sized space behind a circuit board, all precision and neat, tight folds.
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