ScienceDaily: Top Science News

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Surprising variation among genomes of individual neurons from same brain Posted: 01 Nov 2013 02:23 PM PDT It was once thought that each cell in a person's body possesses the same DNA code and that the particular way the genome is read imparts cell function and defines the individual. For many cell types in our bodies, however, that is an oversimplification. Studies of neuronal genomes published in the past decade have turned up extra or missing chromosomes, or pieces of DNA that can copy and paste themselves throughout the genomes.

Cellular tail length tells human disease tale Posted: 31 Oct 2013 09:49 AM PDT A molecular biologist's adventures in pond scum have led her and four student researchers to discover a mutation that can make cilia, the microscopic antennae on our cells, grow too long. When the antennae aren't the right size, the signals captured by them get misinterpreted. The result can be fatal. They have discovered that the regulatory gene CNK2 is present in cilia and controls the length of these hair-like projections.

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