Mar 28, 2007
Posted in Bio, Science, genetics at 12:01 am by David Bradley -- 5 Comments; add yours
Here’s a puzzle. If evolution ensures that ‘good’ genes spread through a population, then why are individuals so different? Why don’t people get better and better looking through each generation to the detriment of ugliness and lead to a population of real lookers?
The problem with current evolutionary theory is that it would seem that if females select the most attractive mates, then the genes responsible for their attractive features would …
Mar 16, 2007
Posted in Bio, Chemistry, Science, genetics at 1:00 pm by David Bradley -- 1 Comment
Researchers have developed several tools to help them exploit the underlying chemistry of genomics, while novel chemistry has enabled faster, parallel sequencing methods that not only accelerate genomic research but also cut costs. The very same techniques allow sex chromosomes and complete genomes to be decoded faster and more cheaply than ever before.
Concomitantly, microfluidics technology is improving the way conventional fluorescence chemistry can be exploited in sequencing. Improved understanding of …
Jan 3, 2007
Posted in Bio, Science, genetics, spectroscopy at 12:00 am by David Bradley -- Click to comment
Surface-enhanced Raman spectra (SERS) of DNA and RNA mononucleotides can be detected with high sensitivity, according to UK researchers. Using citrate-reduced silver colloidal nanoparticles aggregated with magnesium sulfate instead of the more common halide ions, reduces inappropriate enhancements and produces spectra that are sufficiently different to allow each to be distinguished.
“The main advantage of our SERS approach is that it allows direct label-free identification of mononucleotides in aqueous solution,” Steven Bell, Director of the …
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