进化论在自然界如何体现-凯发k8官网

进化论在自然界如何体现
文章来源:未知 文章作者:enread 发布时间:2013-06-16 01:16 字体: [ ] 
(单词翻译:双击或拖选)
many students have difficulty understanding and explaining how evolution operates. in search of better ways to teach the subject, researchers at michigan state university developed complete 1 case studies spanning the 2(整个范围) from the 3 changes 4 an evolving characteristic to their 5 consequences and effects in populations. the researchers, peter j. t. white, merle k. heidemann, and james j. smith, then incorporated two of the 7 into a 8 and molecular biology course taught to undergraduates at the university's lyman briggs college. when the students' understanding was tested, the results showed that students who had understood an integrated evolutionary 6 were better at explaining and describing how evolution works in general.
 
the results of the research, described in the july issue of bioscience, are significant because evolution is not usually taught in this comprehensive, soup-to-nuts way. rather, 9 teach examples of parts of the evolutionary process, such as the 10 effects of natural selection or the rules of genetic inheritance, separately. it appears that this fragmentation makes it harder for students to understand the process as a whole.
 
white and his colleagues note that "surprisingly few" comprehensive evolutionary study systems have been described, although the number is growing. the two employed in the bioscience study were about the evolution of sweet taste and wrinkled(有皱纹的) skin in domestic garden peas, and the evolution of light or dark coat color in beach mice living on light or dark sand. students were tested on the beach mouse coat color scenario as well as on evolutionary principles in general. understanding the beach mouse example was a better predictor of good responses to questions about evolution in general than was performance on the course as a whole. this suggests that improvements in evolutionary understanding came mostly from studying the integrated evolution scenarios.


点击收听单词发音收听单词发音  

1 ctqz7m     
adj.进化的;演化的,演变的;[生]进化论的
参考例句:
  • life has its own evolutionary process.生命有其自身的进化过程。
  • these are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
2 hzjyl     
n.全音阶,(一领域的)全部知识
参考例句:
  • the exhibition runs the whole gamut of artistic styles.这次展览包括了所有艺术风格的作品。
  • this poem runs the gamut of emotions from despair to joy.这首诗展现了从绝望到喜悦的感情历程。
3 me9xh     
adj.分子的;克分子的
参考例句:
  • the research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
  • for the pressure to become zero, molecular bombardment must cease.当压强趋近于零时,分子的碰撞就停止了。
4 5fyz8c     
adj.在下面的,含蓄的,潜在的
参考例句:
  • the underlying theme of the novel is very serious.小说隐含的主题是十分严肃的。
  • this word has its underlying meaning.这个单词有它潜在的含义。
5 pgixp     
adj.遗传的,遗传学的
参考例句:
  • it's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
6 lzoxm     
n.剧本,脚本;概要
参考例句:
  • but the birth scenario is not completely accurate.然而分娩脚本并非完全准确的。
  • this is a totally different scenario.这是完全不同的剧本。
7 f7c7eeee199dc0ef47fe322cc223be88     
n.[意]情节;剧本;事态;脚本
参考例句:
  • further, graphite cores may be safer than non-graphite cores under some accident scenarios. 再者,根据一些事故解说,石墨堆芯可比非石墨堆芯更安全一些。 来自英汉非文学 - 环境法 - 环境法
  • again, scenarios should make it clear which modes are acceptable to users in various contexts. 同样,我们可以运用场景剧本来搞清楚在不同情境下哪些模式可被用户接受。 来自about face 3交互设计精髓
8 au1yo     
adj.移动的;细胞的,由细胞组成的
参考例句:
  • she has a cellular telephone in her car.她的汽车里有一部无线通讯电话机。
  • many people use cellular materials as sensitive elements in hygrometers.很多人用蜂窝状的材料作为测量温度的传感元件。
9 5ea75ff41aa7350c0e6ef0bd07031aa4     
指导者,教师( instructor的名词复数 )
参考例句:
  • the instructors were slacking on the job. 教员们对工作松松垮垮。
  • he was invited to sit on the rostrum as a representative of extramural instructors. 他以校外辅导员身份,被邀请到主席台上。
10 irrxx     
adj.生态的,生态学的
参考例句:
  • the region has been declared an ecological disaster zone.这个地区已经宣布为生态灾难区。
  • each animal has its ecological niche.每种动物都有自己的生态位.
上一篇: 下一篇:
tag标签: students works
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片
最新评论
网站地图