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 ...

MOORHEAD — Children will have an opportunity to explore DNA at an upcoming event at the Moorhead Public Library. At 3 p.m. Friday, Match 14, the library at 118 5th Ave. S. is hosting a free science ...