Laura Defrancesco | Jan 26, 2003 | 1 min read
Frontlines | Physics Rules One wonders what force Dylan Thomas was pondering when he wrote: "The force that through the green fuse drives the flower/ Drives my green age." Chances are the poet wasn't considering genetics, but that shouldn't bother researchers Paul Kulesa and Scott Fraser. They've discovered that physical forces may be more important than gene expression during the development of chick somites, or embryonic segments. The prevailing view has been that molecular biology driv