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tag noncoding dna evolution

Targeted Comparative Sequencing Illuminates Vertebrate Evolution
Ricki Lewis | Dec 8, 2002 | 6 min read
Image: Courtesy of Elliott Marguiles  PIPS ON PARADE: Researchers used a MultiPipMaker to show the alignments, expressed as percent identity plots, between a human reference sequence and several other species. This is a 20 kb region surrounding exon 2 of the MET gene. Gap-free alignable segments are represented as horizontal lines along the human reference sequence; the line's height represents the identity of that alignment. Aristotle envisioned humanity as the pinnacle of a "Great Chai
Jaume and the Giant Genome
Daniel Grushkin | Feb 1, 2011 | 3 min read
The Japanese canopy plant's impressive DNA may confer novel evolutionary strategies.
Jaume and the Giant Genome
Daniel Grushkin | Jan 31, 2011 | 3 min read
A newly minted PhD finds a 150-billion-base-pair-long DNA molecule in a plant.
The Human Genome
Arielle Emmett | Jul 23, 2000 | 10+ min read
Life sciences took center stage virtually around the world June 26. President Bill Clinton, flanked on the left by Celera Genomics Group president J. Craig Venter and on the right by National Human Genome Research Institute director Francis S. Collins, announced the completion of "the first survey of the entire human genome."
For Olfaction, a Hypothesis is Felled
Peter Mombaerts | Oct 24, 2004 | 6 min read
Peter MombaertsCourtesy of Peter MombaertsRarely do scientific studies claim that something is not the case. Rarer still do negative results appear in top-tier journals. Yet two recent papers in Nature describe what olfactory sensory neurons do not do.12The olfactory system is often compared to the immune system. The key cell types in each system, the olfactory sensory neuron (OSN) and the lymphocyte, can detect a wide variety of chemicals, both natural and synthetic. Chemical recognition by the
Genome Economy
Ricki Lewis | Jun 10, 2001 | 10 min read
The Human Genome Project's discovery1 that the human body runs on an instruction manual of a mere 35,000 or so genes--compared to the worm's 19,000, the fruit fly's 13,000, and the tiny mustard relative Arabidopsis thaliana's 25,000--placed humanity on an even playing field with these other, supposedly simpler, organisms. It was a humbling experience, but humility quickly gave way to awe with the realization that the human genome might encode 100,000 to 200,000 proteins. Scientists base this num
Alternative Splicing Goes Mainstream
Sam Jaffe | Dec 14, 2003 | 10 min read
In eukaryotic genetics, the one-gene/one-protein concept has, for the most part, breathed its last. Researchers have rallied behind mechanisms such as alternative splicing, which may allow a lowly 30,000-gene genome to produce the dizzying variety of proteins that some believe is necessary to produce beings as complex as humans. Alternative splicing--the post-transcriptional editing process that can result in various mRNAs--was previously seen as an interesting but relatively uncommon sidesh

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