理学 >>> 数学 信息科学与系统科学 物理学 化学 天文学 地球科学总论 大气科学 地球物理学 地理学 地质学 水文学 海洋科学 生物学 科学技术史
搜索结果: 1-8 共查到理学 ancestor相关记录8条 . 查询时间(0.062 秒)
Thousands of years ago, people in South America began domesticating Solanum pimpinellifolium, a weedy plant with small, intensely flavored fruit. Over time, the plant evolved into S. lycoper...
You'd think that losing 25 percent of your genes would be a big problem for survival. But not for red algae, including the seaweed used to wrap sushi.Red algae include phytoplankton and seaweeds, also...
Scientists have long wondered what the earliest dinosaur relatives looked like. Most assumed they would resemble miniature dinosaurs, about the size of chickens, and walk on two legs.The discovery of ...
A new relative joins “Lucy” on the human family tree. An international team of scientists, led by Curator of Physical Anthropology Dr. Yohannes Haile-Selassie, has discovered a 3.3 to 3.5 million-year...
A new relative joins “Lucy” on the human family tree. An international team of scientists, led by Curator of Physical Anthropology Dr. Yohannes Haile-Selassie, has discovered a 3.3 to 3.5 million-year...
The earliest evidence of our human genus – Homo – was found in Ethiopia by a team of Arizona State University scientists and students during field research in 2013.The fossil, the left side ...
Crocodiles are the closest living relatives of the birds, sharing a common ancestor that lived around 240 million years ago and also gave rise to the dinosaurs. A nestudy of crocodilian ge...
October 30, 2006,UPTON, NY - By making a single substitution in the amino acid sequence of a modern enzyme, scientists have changed its function into that of a theoretical distant ancestor, providing ...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...