Steve Bunk | Mar 17, 2002 | 7 min read
One more genomewide linkage map, this for a fish called the three-spined stickleback, was announced late last year to not much fanfare.1 But rather than just another stride in the march of genomics, the accomplishment heralded a new way to approach a question that has stumped evolutionary biologists for decades: What is the architecture of genetic change? The model organisms for which linkage maps have been created are often bred in the laboratory to express certain phenotypes, and they can reve