They also find evidence of possible gene flow in the opposite direction (polar bear DNA into the grizzly population) suggesting different scenarios of who was mating with who. (dotearth.blogs.nytimes.com)
So great is the efficiency of the Mendelian mechanism of gene recombination that only a minuscule fraction of the potentially possible gene combinations can ever be realized. (religion-online.org)
Equipped from the outset with the best possible genes by BMW, they represent the ultimate in performance, comfort, driving culture and efficiency. (bmwblog.com)