Third Genetic Code Anyone?

Third Genetic Code Anyone?

genome is a curious one, when so far as we know the specificity of those modifications depends on genome-encoded proteins. The hope of believers is that, once the modifications have been made they are 'self-replicating' — they guide similar modification of daughter chromatin. This remains a possibility, but so far at least there is little hard evidence for such self-replication, independent of ...

The slow code--should anyone rush to its defense?

PubMed Citation The past two decades have witnessed dramatic changes in professional values and social expectations regarding medical care and decision making at the end of life. Increased emphasis on patients' autonomy and participation have made open discussion, both in the medical and popular literature and at the bedside, the new norm. The seemingly final taboo, euthanasia, is now the topic...

’ ANYONE FOR TENNIS ? 199 Anyone for tennis ?

Genetic code

Is the code universal? No. Although most organisms have the same genetic code, researchers began to discover exceptions to the ‘universal’ code in 1979, and today we know of more than 15 alternative codes; each has just a few differences from the standard code, indicating common ancestry from this code. Several of these codes arose independently a number of times in evolution and are present in...

Seconds, anyone?

Scientists and journalists don’t always see the world the same way. A “first” often makes news. But in science, the “second” – that is the confirmation – may actually be more important. Journalists are like toddlers, though, when it comes to seconds. They often need coaxing. Consider two recent cases. First, Neanderthal DNA. Back in 1997, reporters made a bit of a fuss when scientists announced...