PYI: Interspecific Molecular Variation

大卫博士M.希利斯的研究兴趣涉及 分析每一个代表的核糖体基因， 青蛙科以及其他两栖动物。 这种分子 技术作为一种恢复的手段是非常强大的 在数亿年的进化史中， 两栖动物的进化 这项工作包括测序一部分 28S核糖体RNA基因含有大量插入片段 （增加了遗传密码的长度）。 此外，还有两个问题引起了希利斯的注意。 首先，他参与了分离和识别特定 来自保存完好的万年前人类遗骸的基因片段 发现于佛罗里达的小盐泉。 第二，他正在研究 高度多态性的树蜗牛Liguus fasciatus的遗传学， 已经证明，这是由种群组成的， 基因重组在某些地方，但克隆和没有 其他的基因重组。 希利斯博士的学术 德克萨斯大学奥斯汀分校（University of Texas at Austin） 资金 通过总统青年研究员奖提供， 为期五年。

Dr. David M. Hillis's research interests concern the analysis of ribosomal genes of representatives of each of the families of frogs, as well as other amphibians. Such molecular techniques are extremely powerful as a means of recovering evolutionary history over the hundreds of millions of years of amphibian evolution. This work includes sequencing a portion of the 28S ribosomal RNA gene that contains numerous insertions (added lengths of genetic code). In addition, two other problems occupy Hillis's attention. First, he is involved in efforts to isolate and identify specific gene fragments from well-preserved 10,000 year old human remains found at Little Salt Spring, Florida. Second, he is studying the genetics of the highly polymorphic tree snail Liguus fasciatus, which has proven to consist of populations that reproduce with genetic recombination in some locations but clonally and without genetic recombination at others. Dr. Hillis's academic institution is the University of Texas at Austin. Funding is provided through a Presidential Young Investigator Award for a duration of five years.