Evolution: How birds spread around the globeEvolutiondoi:10.1038/528311bNature ResearchNature
BEIJING, Aug. 2 (Xinhua) -- A team of Chinese paleontologists has made a significant discovery by identifying remnants of a vegetable diet in the stomach contents of a 120-million-year-old fossilized bird found in northeastern China. The findings, published recently in the journal Nature Communi...
As Nature has pointed out before, there are some legitimate concerns about how science prizes—both new and old—are distributed. 出自-2014年考研阅读原文 You make further inferences, for instance, about how the test may be significant to you, or about its validity—inferences that form the bas...
turtle embryos are made of undifferentiated cells 乌龟胚胎是由未分化的细胞构成, that become specific cell types, 它们会变成特定的细胞类型, and then organs and tissues, 接着透过基因活动 以及细胞之间的沟通, through gene activity and communication between cells. ...
In this example, you can see evolution at work. A random DNA mutation created an E. coli cell that is unique. The cell is unaffected by the antibiotic that kills all of its neighbors. This unique cell, in the environment of that petri dish, is able to survive. E. coli are about as...
So feathers may be telling us a lot more about the structure of the dinosaur’s family tree than simply “here are the birds”. They may actually be the defining feature of one of the most fundamental splits in the dinosaur tree that occurred very early in their evolution. ...
LONDON, March 24 (Xinhua) -- A 145-million-year-old fossil discovered in China has helped scientists discover for the first time the evolution of bird legs. A report published Wednesday by the University of Manchester has reinforced evidence of how birds evolved gradually from early dinosaurs. ...
More about evolution In rare evolutionary event, weird platypus cousin evolved from living in water to living on land Evolution itself can evolve, new study argues Latest 1,800-year-old warhorse cemetery held remains of a beloved horse — and a man considered an 'outsider' to Roman society ...
Human evolution occurred in View Solution What are homologous organs? How do they differ from the analogous organs? How does the study of comparative anatomy provide evidence in favour of organic evolution? View Solution Birds have evolved from reptiles. How does Palaeontology provide evidence in sup...
The Same Old Song Male humpback whales are known for their long, vocal songs. A humpback's song can last as long as 30 minutes, and can be heard underwater miles away. Photo courtesy NOAA In the past hundred years, the world's attitude toward whales has changed drastically. The anima...