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第15课

2021-6-12 14:58| 发布者: admin| 查看: 99| 评论: 0

摘要: .

第15课

Lesson 15

生物繁殖新技术

New technology of biological reproduction

1.现在有哪些新的生物繁殖技术？

What are the new biological reproduction technologies?

我们收集一些资料进行研究吧。

Let's collect some data for research.

2.《西游记》中描写的孙悟空，在紧要关头拔下身上的猴毛，一吹就变出一大群猴子。猴毛变的猴就是“克隆猴 ”。在科技高速发展的今天，克隆技术已将神话变成了现实。对于克隆技术，你了解多少？让我们交流一下吧。

Monkey King, described in journey to the west, plucks the monkey hair from his body at a critical moment and turns into a large group of monkeys. The monkey whose hair has changed is the clone monkey. With the rapid development of science and technology, cloning technology has turned myth into reality. What do you know about cloning? Let's talk about it.

我知道克隆羊“多利 ”……

I know Dolly the cloned sheep

我还知道 ……

I also know

资料卡

index card for files

“多利”于1996年7月5日出生于英国罗斯林研究所。这是一件轰动世界的大事，因为“多利”是通过克隆而来的。科学家认为“多利”的诞生标志着生物技术新时代的来临。

Dolly was born on July 5, 1996 at the Roslin Institute. This is a big event that has caused a sensation in the world, because Dolly was cloned. Scientists believe that the birth of Dolly marks the advent of a new era of biotechnology.

“多利”的诞生不是一帆风顺的，而是经历了一个非常复杂的“复制”过程。其主要过程分为四步：

The birth of Dolly was not plain sailing, but experienced a very complex process of "replication". The main process is divided into four steps

一、从一只6岁芬兰白面母绵羊的乳腺中取出乳腺细胞，将其放入低浓度的营养培养液中，称之为供体细胞。

1、 Mammary gland cells were extracted from the mammary gland of a 6-year-old Finnish white faced ewe and put into a low concentration nutrient medium, called donor cells.

二、从一只苏格兰黑面母绵羊的卵巢中取出未受精的卵细胞，将细胞核除去，留下一个无核的卵细胞，称之为受体细胞。

2、 Unfertilized oocytes were removed from the ovaries of a Scottish black faced ewe, and the nucleus was removed, leaving a seedless oocyte, called a recipient cell.

三、将供体细胞的核取出，与受体细胞融合，形成胚胎细胞。

3、 The nucleus of donor cells was taken out and fused with recipient cells to form embryonic cells.

四、将胚胎细胞转移到另一只苏格兰黑面母绵羊的子宫内，胚胎细胞进一步分化和发育，最后形成小绵羊“多利”。

4、 The embryo cells were transferred to the uterus of another Scotch black faced sheep, and the embryo cells further differentiated and developed, and finally formed the small sheep "Dolly".

2003年2月14日，“多利”因患严重的肺病而接受“安乐死”。科学

家认为，“多利”的死亡反映了当前克隆技术还存在着一定的缺陷。

On February 14th, 2003, Dolly was euthanized for his severe lung disease. scienceAccording to the family, the death of Dolly reflects the defects of cloning technology.

资科卡

index card for files

克隆人体器官

Cloning human organs

当一个人患有严重心脏病的时候，如果可以单独培养一颗心脏并进行移植，那该多好!

When a person suffers from a serious heart condition, how great it would be if a heart could be grown separately and transplanted!

随着科学技术的发展，克隆人体器官已不是什么幻想，某些国家已经在培育人体器官。

With the development of science and technology, cloning human organs is no longer a fantasy and certain countries are already cultivating human organs.

相信在不久之后，随着人体器官克隆技术的发展，医学领域将会出现一场革命，某些绝症将能够治愈。

I believe that in the near future, with the development of human organ cloning technology, there will be a revolution in the field of medicine, and some incurable diseases will be cured.

克隆技术可能给人类带来灾难。

Cloning technology may bring disaster to human beings.

克隆器官可以用来替换人体病变的器官。

Cloned organs can be used to replace diseased organs.

3.交流植物繁殖新技术的资料。

Exchange information on new techniques of plant propagation.资料卡

index card for files

植物克隆技术能够使一片树叶变成一片树林！许多植物的一片叶、一个芽，甚至一个茎尖，直接接种在大田沙床上，只需要4~11天就可发育成再生的完整植株，长出发达的根系，每30~60天就可繁殖一代，并且不受季节的限制。

Plant cloning can turn a leaf into a forest! A leaf, a bud, or even a stem tip of many plants can be directly inoculated on the sand bed in the field. It only takes 4-11 days to develop into a complete regenerated plant and grow a developed root system. It can reproduce every 30-60 days and is not limited by the season.

经过人们10余年的研究与试验，这项技术现在已经发展成十分完整、成熟的技术了。

After more than 10 years of research and experiment, this technology has now developed into a very complete and mature technology.

资料卡

index card for files

袁隆平院士是中国杂交水稻研究的创始人，也是世界上成功利用水稻杂交优势的第一人。

Academician Yuan Longping is the founder of Hybrid Rice Research in China, and also the first person in the world to successfully utilize rice heterosis.

他从1964年开始研究杂交水稻以来，取得了一系列科研成果，并因此荣获我国第一家特等发明奖，在国际上被誉为“杂交水稻之父”。

Since he began to study hybrid rice in 1964, he has made a series of scientific research achievements, and therefore won the first special Invention Award in China, known as the "father of hybrid rice" in the world.

他的成果不仅有效地解决了中国人的吃饭问题，而且有效地解决了世界性的饥荒问题。

His achievements not only effectively solved the problem of Chinese eating, but also effectively solved the problem of worldwide famine.

国际上甚至把袁隆平的杂交水稻当作中国继四大发明之后的第五大发明，称其为“第二次绿色革命”。

In the world, Yuan Longping's hybrid rice is even regarded as China's fifth invention after the four great inventions, which is called "the second Green Revolution".

4.用自己搜集的信息资料办一期手抄报。

Using the information and materials collected by ourselves to do a hand copied newspaper.

单元评价

Unit evaluation

我最喜欢的活动

My favorite activity

研究种子的构造

Study the structure of seeds

种辣椒

Grow pepper

研究花的构造

Study the structure of flowers