Parental chromosomes kept apart during embryo’s first division
It was long thought that during an embryo's first cell division, one spindle is responsible for segregating the embryo's chromosomes into two cells. EMBL scientists now show that there are actually two spindles, one for each set of parental chromosomes, meaning that the genetic information from each parent is kept apart throughout the first division. Science publishes the results—bound to change biology textbooks—on 12 July 2018.
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