First exoplanet confirmed to be tidally locked to its star.

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LHS3844b is a large rocky planet revolving around a star located about 48.5 light years from Earth. It has been confirmed in recent study that it is tidally locked with its star.  The observations of intensities light reflected from it throughout it's transit around it's star could be used to estimate it's days-side surface temperature. It's surface temperature is estimated to be about 1300 degree Celsius. 
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DNA repair is deleterious during mitotic phase

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Cells have mechanisms to repair broken DNA molecules. The machinery to repair broken DNA, specifically, double stranded breaks (DSB), is shut down when the cells are dividing, i.e. when cells are in mitotic phase.

In a recently published paper by researchers from The Lunenfeld-Tanenbaum Research Institute and University of Toronto observed the effects of restoring the DSB repair machinery in mitotic cells. They found that restoration of this machinery was actually harmful and caused the ends of the chromosomes to fuse. This resulted in dicentric chromosomes and aneuploidy.


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