though the first actual thing to be cloned was a tadpole(蝌蚪) in 1952.She was cloned at the Roslin Institute in Scotland and lived there until her death when she was six in 2003.On April 9,her dead body was placed at Edinburgh’s Royal Museum,part of the National Museums of Scotland...
(genetic) the same as another cell or organism. Many simple organisms such as bacteria reproduce themselves by 2. (copy) their DNA and splitting (分裂) in half. The verb “to clone” refers 3. the process of creating cloned cells or organisms. The process differs, 4. (depend) on the ...
What is oogenesis in the study of the female reproductive system? What name was given to the first mammal to be cloned from adult somatic cells? Fill in the blank. In humans, cells that produce gametes are collectively called ___. What is...
小题3:G 根据后面Since Dolly可知这里是讨论在Dolly被克隆之前的被克隆的动物。小题4:B 根据下一段内容可知是讨论所运用的克隆的技术。小题5:F 根据后面的很多动物的克隆都比较困难可知F符合要求。
If it gestates successfully and is born, the cells of the new organism are clones of the original cell. The first animal to be successfully cloned from a somatic cell was a sheep named Dolly, who was born in 1996. Since then, animals of several other species, including rats, cats, ...
由文中have humans been cloned 这一部分第三段最后一句“However, an independent scientific committee later found no proof to support the claim and, in January 2006, Science announced that Hwang’s paper had been retracted (撤销).”(然而,一个独立的科学委员会后来发现没有证据支持这一说法,2006 年...
1983.The first genetically modified plant is introduced. 1993.GMOs are introduced into agriculture with the FDA approval of growth hormones that produce more milk in cows. 1997.The first mammal is cloned. 1998.The first draft of theHuman Genome Projectis created, giving scientists access to over...
This was the method used to create Dolly the sheep.3. What can we infer from the last three paragraphs?DA. The normal development of Dolly had no effect on thecloning of other species.B. Dolly's serious disease and final death disturbed thewhole world.C. Dolly successfully cloned a new ...
Tetra, a monkey born in 1999, is the world’s first cloned monkey, but it was done by using a simpler method called embryo splitting(胚胎分割), and cannot be genetically changed to suit the experimental need. Cloning a monkey using somatic cells has been a world-class challenge because it...
“asexual replication of an organism”, in other words, to make an exact copy. The first time pluripotent, embryonic stem cells were used from a clonedhumanwas 2004. After the development of full human cloning, laws were passed in order to minimize concert about human rights issues and ...