For years, scientists have attempted to construct new bacterial genomes from scratch, in the hope of genetically engineering a microbe that produces biofuels or drugs. Turns out, they've been doing it the hard way. A new study finds that editing existing genomes down to only the desired genes works far better than creating new genomes from the ground up.
By Gregory MonePosted 12.06.2007 at 12:09 pm 1 Comment
Parents, be on guard, because your kids are watching very, very closely. A new Yale University study appearing in Proceedings of the National Academy of Sciences shows that kids learn how to perform certain actions or tasks through a very dedicated form of imitation. They tend to copy all the motions or steps an adult uses to perform a given manipulation task, rather than just the important ones. The three-to-five-year-old kids in the study could tell which actions were unnecessary, such as tapping a box with a feather before opening it. Yet they still copied superfluous actions when mimicking adults in other tests.—Gregory Mone