21-02-09 不少人都听说过用转基因改造生物。多年来,科学家一直在研究修改生物和植物的DNA,以从某种方式上改变它们的特征。生活中最常见的例子就是转基因食品。现在,科学家可对猪的基因进行改造,从而提起它们的存活率。他们使用的技术不是转基因,而是基因编辑。区别是什么呢...
16-04-09 Some cells are meant to live, and some are meant to die. The linker cell of Caenorhabditis elegans, a tiny worm that is a favored model organism for biologists, is among those destined for termination. This cell helps determine the shape of the gona...
16-03-03 A fossil dating from 440 million years ago is not only the oldest example of a fossilised fungus, but is also the oldest fossil of any land-dwelling organism yet found. The organism, and others like it, played a key role in laying the groundwork for...
15-08-04 Researchers led by the University of Cambridge have found the earliest example of reproduction in a complex organism. Their new study has found that some organisms known as rangeomorphs, which lived 565 million years ago, reproduced by taking a join...
15-08-03 Starvation early in life can alter an organism for generations to come, according to a new study in roundworms. The effects are what Duke University biologist Ryan Baugh terms a bet-hedging strategy. In nature, the worms live a boom-or-bust lifestyl...
15-03-17 Whether you're baking bread or building an organism, the key to success is consistently adding ingredients in the correct order and in the right amounts, according to a new genetic study by University of Michigan researchers. Using the baker's yeast...