Chromosome alone

 作者:齐咋镯     |      日期:2019-03-08 08:20:00
INSTEAD of being packed together on chromosomes with hundreds and thousands of neighbours, some of the genes in dinoflagellates—the floating algae that sometimes produce toxic “red tides”—each have a chromosome all to themselves. Chloroplasts, the chlorophyll-carrying packets in plants, have their own DNA and probably evolved from bacteria that formed a partnership with a primordial plant cell. Not all chloroplasts are alike, however. Zhaoduo Zhang and colleagues at the University of British Columbia report this week in Nature (vol 400,