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句子目录预览：
克隆句子 青的草，绿的叶，各色鲜艳的花，都像赶集似的剧情聚拢来，形成光彩夺
1.秋天迈着沉稳的脚步缓缓地向我们走来,又悄无声息地走开。
2.秋便以翩跹之姿踏碎了夏天的流言.
3.秋天是美丽的，在曼妙的韵律中舞着她的裙摆。
4.花儿在风中笑弯了腰.
5.夜空中的小星星眨着眼睛,似乎对你微笑.
6.向日葵不断地面向太阳公公做运动．
7.春天像刚刚落地的娃娃,从头到脚都是新的,它生长着...
8.春天是个害羞的小姑娘,遮遮掩掩,躲躲藏藏；春天是出生的婴儿，娇小可爱。
9.春天就像活泼的儿童，憧憬渴望；春天就像健壮的青年，充满朝气；春天就像健康的老人，令人回味。
10 .风儿清唱着歌，唤醒了沉睡中的大地。
11.顽皮的雨滴最爱在雨伞上尽情的跳舞。
12`船头飞溅起的浪花，吟唱着欢乐的歌儿。
13.秋天到了，树上金红的果子露出了笑脸，她在向着我们点头微笑。
14.海棠果摇动着它那圆圆的小脸，冲着你点头微笑。
15.那点薄雪好像忽然害了羞，微微露出点粉色。
16.一个个红石榴小姑娘绽放出可爱的笑脸，躲在树枝间。
17.树缝里也漏着一两点路灯光，没精打彩的，是渴睡人的眼。
18.巨浪伸出双臂把我猛地托起。
19.宁静的夜晚，只有那天上的星星正在窃窃私语.
20.绿油油的草被风吹弯了腰.
22.油蛉在低唱，蟋蟀们在弹琴。
23.春尚浅，几处山顶上的梅花却挣扎着吐出红苞来。
24.微风柔和地吹, 柔和地爱抚我的面孔。
25.荷塘里的荷花都羞涩地打着朵。
26.落叶随着风高低起舞。
27.我沐浴在大自然的怀抱中，让柔和的晚风轻抚着鬓角，吹去一切郁闷和烦恼。
28.阳春三月，沉睡了一冬的银梨树被蒙蒙细雨淋醒。
29.它脱下破旧的外衣，又开始新的生活；它贪婪地吮吸着春天那清新、甜润的露珠儿，慢慢地长出逗人喜爱的嫩枝绿叶。
30.仲夏夜，清风徐徐吹来，明月追赶晚霞，早早爬过山头，挂在中天，那月光似乎带着一股清凉，驱赶着酷日留下的余热。
31.蜘蛛把苍蝇拖来拖去，等苍蝇累得筋疲力尽，蜘蛛才高高兴兴地享用了这顿美餐。
32.当悲伤的水流入稳重的山，水这可怜儿的悲伤也勾起了山的悲伤，于是他们的心一起碎了；水把头埋入地下，山却把心的碎片一块块收好。于是就有了迷乱复杂的溶洞，就有了千姿百态的石笋，就有了洞口突突的泉水。
33.天空中的星星眼睛一眨一眨的。
34.鸣蝉在树叶里长吟。
35.风是调皮的，一会把那朵悠闲的云赶得满天跑，还不断变化她的面具，一会儿卷起地上的落叶，让她们打着旋舞蹈。
36.水是野的,索溪像是一个从深山中蹦跳而出的野孩子,一会儿缠绕着山奔跑,一会儿撅着屁股,赌着气又自个儿闹去了
37.小树摆动着枝叶,向我们点头笑。
38.一排排柳树倒映在水中,欣赏着自己的容貌。
39.月亮一露面，满天的星星惊散了。
40.在那天边隐约闪亮的不就是黄河？那在山脚缠绕不断的自然是汶河；那拱卫在泰山膝盖下的无数小馒头，却是沮涞山等著名的山岭。
41.日出江花红胜火，春来江水绿如蓝”这是革命的春天，这是人民的春天，这是科学的春天！让我们张开双臂，热烈地拥抱这个春天吧！
42.蜡炬成灰泪始干。
43.蝴蝶初翻帘绣，万玉女、齐回舞袖。
44.女人坐在小院子当中，手指上缠绞着柔滑修长的苇眉子，苇眉子又薄又细，在她怀里跳跃着。
45.杜甫川唱来柳林铺笑，红旗飘飘把手招。
46.春天迈着轻盈的步伐来到我们身边。
47.花儿随风舞蹈。
48.翠绿欲滴的椰子从叶间探出了头
多媒体 、克隆、互联网各自造两个句子？
多媒体造句：
1.信息化时代的到来后，教育局引入了多媒体设备，使得原本呆板的教学方式变得更加有专业化以及现代化。
2.在多媒体设备的辅助下，让原本相聚万里的不同学校的学生能线上沟通学习。
克隆造句：
1.众所周知，提起克隆，我们便经常会想到克隆羊多利。
2.电视剧《你好，安怡！》里面的薪机人被克隆的多么像啊！
互联网造句：
1.自从有了互联网，人们的工作更加便利，线上交流模式能省下更多的时间。
2.互联网顾名思义就是交互在一起的网络，它能将整个世界的信息时刻联系在一起。
英语作文关于克隆的相关句子和单词？
Cloning in biology is the process of producing populations of genetically-identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually. Cloning in biotechnology refers to processes used to create copies of DNA fragments (molecular cloning), cells (cell cloning), or organisms. More generally, the term refers to the production of multiple copies of a product such as digital media or software.
Molecular cloning refers to the process of making multiple copies of a defined DNA sequence. Cloning is frequently used to amplify DNA fragments containing whole genes, but it can also be used to amplify any DNA sequence such as promoters, non-coding sequences and randomly fragmented DNA. It is used in a wide array of biological experiments and practical applications ranging from genetic fingerprinting to large scale protein production. Occasionally, the term cloning is misleadingly used to refer to the identification of the chromosomal location of a gene associated with a particular phenotype of interest, such as in positional cloning. In practice, localization of the gene to a chromosome or genomic region does not necessarily enable one to isolate or amplify the relevant genomic sequence.
In practice, in order to amplify any DNA sequence in a living organism, that sequence must be linked to an origin of replication, which is a sequence of DNA capable of directing the propagation of itself and any linked sequence. However, a number of other features are needed and a variety of specialised cloning vectors (small piece of DNA into which a foreign DNA fragment can be inserted) exist that allow protein expression, tagging, single stranded RNA and DNA production and a host of other manipulations.
Cloning of any DNA fragment essentially involves four steps [1]
fragmentation - breaking apart a strand of DNA
ligation - gluing together pieces of DNA in a desired sequence
transfection - inserting the newly formed pieces of DNA into cells
screening/selection - selecting out the cells that were successfully transfected with the new DNA
Although these steps are invariable among cloning procedures a number of alternative routes can be selected, these are summarized as a cloning strategy’.
Initially, the DNA of interest needs to be isolated to provide a DNA segment of suitable size. Subsequently, a ligation procedure is used where the amplified fragment is inserted into a vector (piece of DNA). The vector (which is frequently circular) is linearised using restriction enzymes, and incubated with the fragment of interest under appropriate conditions with an enzyme called DNA ligase. Following ligation the vector with the insert of interest is transfected into cells. A number of alternative techniques are available, such as chemical sensitivation of cells, electroporation and biolistics. Finally, the transfected cells are cultured. As the aforementioned procedures are of particularly low efficiency, there is a need to identify the cells that have been successfully transfected with the vector construct containing the desired insertion sequence in the required orientation. Modern cloning vectors include selectable antibiotic resistance markers, which allow only cells in which the vector has been transfected, to grow. Additionally, the cloning vectors may contain colour selection markers which provide blue/white screening (α-factor complementation) on X-gal medium. Nevertheless, these selection steps do not absolutely guarantee that the DNA insert is present in the cells obtained. Further investigation of the resulting colonies is required to confirm that cloning was successful. This may be accomplished by means of PCR, restriction fragment analysis and/or DNA sequencing.
Cloning a cell means to derive a population of cells from a single cell. In the case of unicellular organisms such as bacteria and yeast, this process is remarkably simple and essentially only requires the inoculation of the appropriate medium. However, in the case of cell cultures from multi-cellular organisms, cell cloning is an arduous task as these cells will not readily grow in standard media.
A useful tissue culture technique used to clone distinct lineages of cell lines involves the use of cloning rings (cylinders)[2]. According to this technique, a single-cell suspension of cells which have been exposed to a mutagenic agent or drug used to drive selection is plated at high dilution to create isolated colonies; each arising from a single and potentially clonally distinct cell. At an early growth stage when colonies consist of only a few of cells, sterile polystyrene rings (cloning rings), which have been dipped in grease are placed over an individual colony and a small amount of trypsin is added. Cloned cells are collected from inside the ring and transferred to a new vessel for further growth.
Cloning in stem cell research
Main article: Somatic cell nuclear transfer
Somatic cell nuclear transfer can also be used to create a clonal embryo. The most likely purpose for this is to produce embryos for use in research, particularly stem cell research. This process is also called "research cloning" or "therapeutic cloning." The goal is not to create cloned human beings, but rather to harvest stem cells that can be used to study human development and to potentially treat disease. While a clonal human blastocyst has been created, stem cell lines are yet to be isolated from a clonal source.[3]
Horticultural
The term clone is used in horticulture to mean all descendants of a single plant, produced by vegetative reproduction or apomixis. Many horticultural plant cultivars are clones, having been derived from a single individual, multiplied by some process other than sexual reproduction. As an example, some European cultivars of grapes represent clones that have been propagated for over two millennia. Other examples are potato and banana. Grafting can be regarded as cloning, since all the shoots and branches coming from the graft are genetically a clone of a single individual, but this particular kind of cloning has not come under ethical scrutiny and is generally treated as an entirely different kind of operation.
Many trees, shrubs, vines, ferns and other herbaceous perennials form clonal colonies. Parts of a large clonal colony often become detached from the parent, termed fragmentation, to form separate individuals. Some plants also form seeds asexually, termed apomixis, e.g. dandelion.
Parthenogenesis
Clonal derivation exists in nature in some animal species and is referred to as parthenogenesis (reproduction of an organism by itself without a mate). An example is the "Little Fire Ant" (Wasmannia auropunctata), which is native to Central and South America but has spread throughout many tropical environments.
Reproductive cloning
Reproductive cloning uses "somatic cell nuclear transfer" (SCNT) to create animals that are genetically identical. This process entails the transfer of a nucleus from a donor adult cell (somatic cell) to an egg which has no nucleus. If the egg begins to divide normally it is transferred into the uterus of the surrogate mother.
Such clones are not strictly identical since the somatic cells may contain mutations in their nuclear DNA. Additionally, the mitochondria in the cytoplasm also contains DNA and during SCNT this DNA is wholly from the donor egg, thus the mitochondrial genome is not the same as that of the nucleus donor cell from which it was produced. This may have important implications for cross-species nuclear transfer in which nuclear-mitochondrial incompatibilities may lead to death.
Dolly the Sheep
Main article: Dolly the Sheep
Dolly (1996-07-05 – 2003-02-14), a Finn Dorsett ewe, was the first mammal to have been successfully cloned from an adult cell, though the first actual thing to be cloned, was a tadpole in 1952[1]. She was cloned at the Roslin Institute in Scotland and lived there until her death when she was six. On 2003-04-09 her stuffed remains were placed at Edinburgh's Royal Museum, part of the National Museums of Scotland.
Dolly was publicly significant because the effort showed that the genetic material from a specific adult cell, programmed to express only a distinct subset of its genes, could be reprogrammed to grow an entire new organism. Before this demonstration, there was no proof for the widely spread hypothesis that differentiated animal cells can give rise to entire new organisms.
Cloning Dolly the sheep had a low success rate per fertilized egg; she was born after 277 eggs were used to create 29 embryos, which only produced three lambs at birth, only one of which lived. Seventy calves have been created from 9,000 attempts and one third of them died young; Prometea took 328 attempts. Notably, although the first clones were frogs, no adult cloned frog has yet been produced from a somatic adult nucleus donor cell.
There were early claims that Dolly the Sheep had pathologies resembling accelerated aging. Scientists speculated that Dolly's death in 2003 was related to the shortening of telomeres, DNA-protein complexes that protect the end of linear chromosomes. However, other researchers, including Ian Wilmut who led the team that successfully cloned Dolly, argue that Dolly's early death due to respiratory infection was unrelated to deficiencies with the cloning process.
Species cloned
Further information: List of animals that have been cloned
The modern cloning techniques involving nuclear transfer have been successfully performed on several species. Landmark experiments[clarify] in chronological order:
Tadpole: (1952) Many scientists questioned whether cloning had actually occurred and unpublished experiments by other labs were not able to reproduce the reported results.[citation needed]
Carp: (1963) In China, embryologist Tong Dizhou cloned a fish. He published the findings in a Chinese science journal which was never translated into English.[4]
Mice: (1986) was the first successfully cloned mammal; Soviet scientists Chaylakhyan, Veprencev, Sviridova, Nikitin had mice "Masha" cloned. Research was published in the magazine "Biofizika" volume ХХХII, issue 5 of 1987.[clarify][5]
Sheep: (1996) From early embryonic cells by Steen Willadsen. Megan and Morag[citation needed] cloned from differentiated embryonic cells in June 1995 and Dolly the sheep from a somatic cell in 1997.[6]
Human: (November 1998) hybrid embryo created from leg cells and a cleaned cow egg - not allowed to implant in a womb, nor develop, nor be born due to ethical issues.[citation needed]
Rhesus Monkey: Tetra (female, January 2000) from embryo splitting[7][clarify]
Gaur: (2001) was the first endangered species cloned.[8]
Cattle: Alpha and Beta (males, 2001) and (2005) Brazil[9]
Cat: CopyCat "CC" (female, late 2001), Little Nicky, 2004, was the first cat cloned for commercial reasons[citation needed]
Mule: Idaho Gem, a john mule born 4 May 2003, was the first horse-family clone.[citation needed]
Horse: Prometea, a Haflinger female born 28 May 2003, was the first horse clone.[citation needed]
Human cloning
Main article: Human cloning
Human cloning is the creation of a genetically identical copy of an existing or previously existing human. The term is generally used to refer to artificial human cloning; human clones in the form of identical twins are commonplace, with their cloning occurring during the natural process of reproduction. There are two commonly discussed types of human cloning: therapeutic cloning and reproductive cloning. Therapeutic cloning involves cloning cells from an adult for use in medicine and is an active area of research: while reproductive cloning would involve making cloned human beings. Such reproductive cloning has not been performed and is illegal in many countries. A third type of cloning called replacement cloning is a theoretical possibility, and would be a combination of therapeutic and reproductive cloning. Replacement cloning would entail the replacement of an extensively damaged, failed, or failing body through cloning followed by whole or partial brain transplant.
The various forms of human cloning are controversial.[10] There have been numerous demands for all progress in the human cloning field to be halted. Some people and groups oppose therapeutic cloning, but most scientific, governmental and religious organizations oppose reproductive cloning. The American Association for the Advancement of Science (AAAS) and other scientific organizations have made public statements suggesting that human reproductive cloning be banned until safety issues are resolved [11]. Serious ethical concerns have been raised by the idea that it might be possible in the future to harvest organs from clones. Some people have considered the idea of growing organs separately from a human organism - in doing this, a new organ supply could be established without the moral implications of harvesting them from humans. Research is also being done on the idea of growing organs that are biologically acceptable to the human body inside of other organisms, such as pigs or cows, then transplanting them to humans, a form of xenotransplantation.
The first human hybrid human clone was created in November 1998, by American Cell Technologies.[12]. It was created from a man's leg cell, and a cow's egg whose DNA was removed. It was destroyed after 12 days. Since a normal embryo implants at 14 days, Dr Robert Lanza, ACT's director of tissue engineering, told the Daily Mail newspaper that the embryo could not be seen as a person before 14 days. While making an embryo, which may have resulted in complete human had it been allowed to come to term, according to ACT: "[ACT's] aim was 'therapeutic cloning' not 'reproductive cloning'"
On January, 2008, Wood and Andrew French, Stemagen's chief scientific officer in California, announced that they successfully created the first 5 mature human embryos using DNA from adult skin cells, aiming to provide a source of viable embryonic stem cells. Dr. Samuel Wood and a colleague donated skin cells, and DNA from those cells was transferred to human eggs. It is not clear if the embryos produced would have been capable of further development, but Dr. Wood stated that if that were possible, using the technology for reproductive cloning would be both unethical and illegal. The 5 cloned embryos, created in Stemagen Corporation lab, in La Jolla, were destroyed.[13]
科学家克隆山羊。(扩写句子)
答案：英国科学家伊恩·维尔穆特博士用克隆的方法克隆了山羊多莉。
1996年7月5日，英国科学家伊恩·维尔穆特博士用一个成年羊的体细胞成功的克隆出了一只小羊。这只小羊与它的“母亲”一模一样。动物的繁衍一般都要经过有性繁殖过程，要使它们能够无性繁殖，必须经过复杂的操作程序。1997年2月22日，英国生物遗传学家维尔穆特成功地克隆出了一只羊。克隆羊“多莉”的诞生震惊了世界。克隆是英语Clone的音译，指人工诱导的无性繁殖。动物克隆试验的成功在细胞工程方面具有划时代的意义。
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