In human cells, there are about 20,000 genes on a two-meter DNA strand—finely coiled up in a nucleus about 10 micrometers in diameter. By comparison, this corresponds to a 40-kilometer thread packed ...
AMES, Iowa — Scientists have studied DNA, the basic unit of life, for a long time. And in the past couple decades, geneticists have created nanoparticles out of DNA's two helix strands. Look back at ...
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