The article focuses on the development of species based on experiments in a laboratory at Rockefeller University in Manhattan, New York City. It highlights the experiments made by Dr. Theodosius Dobzhansky, one of the world's foremost genetic r...
In many bird species, all the eggs in a nest hatch around the same time. But in others, chicks emerge over a period of several days. This is calledasynchronous hatching. It happens when a parent bird starts incubating the eggs right after the first one is laid, instead of waiting until ...
Definition of a virus species 3.21 A virus species is defined as a polythetic class of viruses that constitutes a replicatinglineageand occupies a particular ecological niche. Definition of “tentative” status 3.22 When an ICTV Subcommittee is uncertain about the taxonomic status of anew speciesor ...
根据倒数第二段“It’s been 35 years since Lin selected the grass species to replace wood as a substrate for growing mushrooms in East China’s Fujian Province, and this has saved a vast coverage of natural forest there.(35年前,林在中国东部的福建省选择了草种来代替木材作为种植蘑菇的基质,这...
As much as I'd love to help develop a groundbreaking insect-derived medicine, my main motivation for looking at insects in this way is conservation. I sincerely believe that all species, however small and seemingly insignificant, have a right to exist for their own sake. If we can shine a...
(a cross between two species), would probably be infertile—unable to successfully reproduce after it reached maturity. Different species may have different genes that are active in development; therefore, it may not be possible to develop a viable offspring with two different sets of directions. ...
report 意为“报告”,doubt 意为“怀疑”,develop 意为“发展”,均不符合题意。 故正确答案为B。 43 : 细节题。 结合第五段第二句 To start out, they grew plants in two separate plastic spaces connected by a tube (管子) 和第三句 One plant was infested and placed upwind and the other was...
Cox’s interestin neurodegeneration began when he set out to solve a puzzle that had bedeviled researchers for decades: Why did an extraordinary number of the Chamorro people of Guam develop an odd hybrid of ALS and Alzheimer’s symptoms? Cox’s answer: They had been poisoning themselves ...
China's National Tourism Day falls on May 19 every year starting the year of 2011. The date was chosen to commemorate the day when China's ancient travel book writer Xu Xiake (1587-1641) began writing his masterpiece "Travel Notes of Xu Xiake". Special friendship cuts across species China...
The Tobacco Moth is an introduced pest species of moth. Often found in warehouses and other areas where food or tobacco is stored. Appearance The moth has a wing expanse of 14-17 mm; when at rest, the wings folded to a roof over the body, it is 8-11 mm long. ...