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1. The article first uses the myth ** ( Journey to the West " to introduce the cloning phenomenon of ( plant bacteria sheep cloning phenomenon, and finally tells us that cloning technology can ( benefit mankind and miraculous cloning ( is showing its attractive prospects to mankind.
2. I want to clone ( Panda Because ( Now pandas are rare animals and are about to be endangered, I hope there are more and more pandas, not extinct.
3. "Higher animals generally need to be combined by male and female germ cells in order to reproduce offspring. Can the dotted word (generally) be deleted from this sentence? Please tell us why.
A: No, you cannot. Because "general" means that not all higher animals need to combine male and female germ cells in order to reproduce, but most higher animals need to be combined by male and female germ cells in order to reproduce.
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First use **Journey to the West to introduce the asexual reproduction of clones, and then introduce... Technology can reproduce offspring, and miraculous cloning is a scientific and technological achievement that can benefit humanity.
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Cloning was said to be a kind of asexual reproduction in the early days, but with the development of biological science, it is no longer just this simple concept, and an extended version is that a group of individuals from an ancestor who reproduce asexually are also called "cloning".
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1.Popular tech terms are often given new meanings. Please indicate the contextual meaning of the word "cloning" in the following paragraph.
As the saying goes, it's better to taste a fresh peach than a basket of rotten apricots. Books that "grind the brain" are like fresh peaches, and a large amount of "cloned" information garbage is only worthy of being called "rotten apricots"2"The more advanced technology and the more extensive and in-depth it penetrates into society, the more likely it is to give rise to many related ethical, moral and legal issues.
Recently, there has been a fierce controversy about the fusion of human and rabbit cells, what do you think about this issue? 3.In conjunction with the article "The Wonderful Clone" and the following text, please share your thoughts on human cloning.
In the domestic scientific community, there have also been some different voices recently. For example, a game about"Do you want to clone people or not"The polemic is going on on **. In the past half a month, around the cloned baby that is about to be born, the positive side and the negative side have come and gone"Head to head"A few rounds.
He Zuoxiu, an academician of the Chinese Academy of Sciences, who is known for his boldness and straightforwardness, has expounded his ———views in the "Science Times" under the Chinese Academy of Sciences twice in a row"Cautious support for human cloning research".It is said that this is the first person in the Chinese scientific community to publicly support human cloning research.
Shen Mingxian, director of the Ethics Committee of the National Human Genome Southern Research Center, is right from the aspects of human cloning safety, genetic diversity, history, and ideology"Support human cloning research"The arguments were refuted one by one. He pointed out that opposing human cloning research is by no means opposing science and technology and shackling science and technology, on the contrary, it is for the sake of the healthy and orderly development of science and technology.
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Introduction to Biology
Heredity and the Origin of Species
Genes and Heredity
Talking about the Morganist Theory of Genetics
Genetic Engineering" talks about Jiazhen** Collection
Tan Jiazhen ** Selection".
The Haunting Dream of Genes
Most of them are collected in "Selected Writings of Tan Jiazhen" and "Selected Works of Tan Jiazhen".
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"Wonderful Clone" was selected into the 2014 edition of the junior high school Chinese textbook. The article "The Wonderful Clone" uses four subheadings to make the content of the whole text hierarchical and organized. The article first writes about the meaning of cloning, then writes about cloning experiments, then writes about the development of cloning, and finally writes about the benefits of cloning to mankind and thoughts on cloning.
The context of the text is very clear, which shows that things are advancing step by step.
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"The Magical Clone" was selected into the second volume of the fifth grade of the primary school Chinese in the Soviet Education Edition Lesson 8 (2012 revised edition) This article vividly illustrates the great significance of cloning for the benefit of mankind, and the great significance of human beings getting the cloned sheep "Dolly", showing people the attractive prospect of cloning.
"Wonderful Clones".
To illustrate "cloning", three methods of illustration are used: examples, interpretations, and citations (ps: no column numbers). >>>More
I don't think cloning is good.
First, blood reproduction constitutes the social structure and social relations. Why different countries and different races are almost against human cloning, the reason is that this is another mode of reproduction, and now the issue of child education in single-parent families has attracted much attention, that is, to pay attention to an emotional cultivation problem, human growth is completed in the state of sexual reproduction and parenting, and it has been like this for thousands of years, the emergence of cloned human beings, how should society deal with it, and what should be the relationship between cloned human beings and cloned human beings? Second, it is difficult to distinguish between identity and social rights. >>>More
Never have to be afraid of hair loss? Britain develops cloning technology to permanently prevent baldness?
Let's take the very famous cloned sheep "Dolly" as an example to analyze it: First, the experiment involved three sheep A, B, and CIf you want to clone a sheep, then take a cell of a sheep and take out its nucleus (which contains most of the genetic material), and the cytoplasm is not needed; Then take the egg cells of sheep B (female), remove the nucleus, and leave the cytoplasm, which is called the enucleated egg cell, and the enucleated egg cell is rich in nutrients. >>>More
Advantages: 1. The improved variety (hybrid rice is also a kind of clone) can enrich people's material life, reduce the cost of animal husbandry and improve the efficiency. can alleviate the food crisis; >>>More