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19189

I feel the need to comment on the misconception that trisomies of other than chromosome 21 don’t survive birth. I have a friend whose daughter is a trisomy 18 and just celebrated her 19th birthday and other friends whose children with trisomies are nearing their teenage years. My own son, a trisomy 13, lived for […]

Another chromosome down, more to go

Scientists from six countries have completed the sequence of human chromosome 21.

19148

Newton derived theories about gravity by studying stationary or very slowly moving objects. Laboratory measures of G performed since share this fundamental approach. While this may accurately measure G, any possible relative velocity dependence to this constant or to the force of gravity goes undetected.