Phillips Patrick C
Center for Ecology and Evolutionary Biology, University of Oregon, Eugene, OR 97403-5289, USA.
Trends Genet. 2006 Aug;22(8):405-7. doi: 10.1016/j.tig.2006.06.001. Epub 2006 Jun 27.
Recent studies show that local populations of the nematode Caenorhabditis elegans possess nearly as much genetic variation as that seen in existing worldwide collections. This suggests either wide-ranging migration and intense natural selection or recent dispersal, perhaps by human association. Either way, the effective population size of this ubiquitous model organism is unexpectedly small.
最近的研究表明,线虫秀丽隐杆线虫的本地种群拥有的遗传变异几乎与现有的全球样本中所见的一样多。这表明要么是广泛的迁移和强烈的自然选择,要么是近期的扩散,可能是通过人类活动。无论哪种方式,这种无处不在的模式生物的有效种群大小出人意料地小。