"Wonderful Cloning" PPT courseware 7

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"Wonderful Cloning" PPT courseware 7

Talk about Jiazhen (zhēn)

A famous biologist, one of the founders of modern genetic science in China, an outstanding scientist and educator. Professor Tan Jiazhen, academician of the Chinese Academy of Sciences and former vice president of Fudan University, passed away at 7:18 on November 1, 2008 in Shanghai Huadong Hospital at the age of 100.

In the summer of 1934, Tan Jiazhen went to the California Institute of Technology in the United States to study under Morgan, the founder of modern genetics, and his assistant Dubzansky. Two years later, he received his doctorate. He declined his mentor's offer to stay, resolutely returned to China to teach, and introduced the word "gene" into Chinese. He discovered the mosaic dominance phenomenon of color spot inheritance in ladybugs, which caused great repercussions in the international genetics community and was considered a major contribution to the development of classical genetics. He successively established China's first genetics major, founded the first genetics research institute, and established the first life sciences academy, which is known as the "Morgan of China".

1. Learn a method of extracting information - subtitle analysis method (first sentence analysis method)

Activity 1: Based on the analysis, quickly browse the text and refine the basic content of the article.

Activity 2: Further clarify cloning technology.

According to subtitle 1, briefly introduce cloning technology: (method, means, process, essence)

Cloning technology is a kind of asexual reproduction technology in which biological cells use special methods to reproduce themselves asexually and create new individuals to reproduce offspring.

Why did the birth of "cloned sheep" cause a "sensation" around the world? What scientific value does it have?

Add a third subtitle and introduce the technology in general terms.

Cloning technology is a kind of asexual reproduction technology in which biological cells use special methods to reproduce themselves asexually and create new individuals to reproduce offspring. This technology has gone through many arduous experiments on fish, amphibians and mammals. The emergence of the cloned sheep "Dolly" was a great breakthrough. It proved that animal cells are as totipotent as plant cells. This breakthrough laid a scientific foundation for the emergence of human cloning.

summary:

Based on the information provided by the subtitles of the text, we quickly picked up the basic content of the text, and gained a clearer and more comprehensive understanding of the cloning technology. This is an effective way to extract information from expository texts, and it also summarizes our and the development of compression ability. In explanatory texts without subtitles, we generally adopt the first sentence analysis method, and the specific method is the same as the subtitle analysis method.

experience

(1) What is the benefit of listing these examples?

Clarity: Make difficult things easy and make the article easy to understand;

Look at the relationship between the three groups of examples or within the same group, and think about the role of examples.

Microorganisms: Bacteria

Plants: grape (pú táo), cactus, strawberry

Animals: crucian carp, toad (Chán chú), mouse, sheep

Supplement: There is a passage in "Suzhou Gardens": "The planting and pruning of trees in Suzhou gardens also focus on painting... There are ancient vines in several gardens, and the winding branches are a good painting." This is also an example. What is the role of the illustration method of examples?

Conclusion of this lesson:

We mainly studied two aspects

1. Learn a method of extracting information - subtitle analysis method (first sentence analysis method)

2. Experience an effective explanation method - the example method

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"Wonderful Cloning" PPT teaching courseware:

Contents of the first part of the "Wonderful Cloning" PPT teaching courseware: Text introduction More than ten years ago, many Chinese media reprinted a shocking news reported by foreign media: a group of scientific madmen controlled by a cult organization were carrying out a conspiracy deep in the desert of Nevada, USA. With one item...

"Wonderful Cloning" PPT download:

"Wonderful Cloning" PPT Download Part One: Learning Objectives 1. Clarify the structure of the text and understand the content of the article. 2. Understand the order and method of explanation used in this article. 3. Cultivate a persevering scientific attitude and a scientific spirit of truth-seeking and innovation. Get closer to the author Tan Jiazhen...

"Wonderful Cloning" PPT:

"Wonderful Cloning" PPT Part One: Classroom Introduction Tan Jiazhen (1909.9-2008.11), academician of the Chinese Academy of Sciences, geneticist, and educator. He has been engaged in teaching and researching genetics for more than 70 years, and has taught general biology and comparative anatomy of vertebrates.

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Update Time: 2024-10-15

This template belongs to Chinese courseware Lu Jiao edition seventh grade Chinese language volume 2 industry PPT template

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