Unit 3 Science and nature Warm up

Dr. Ian Wilmut and Dolly
We are cloned female pigs and we were born on Christmas Day 2001.
I was created using a cell from an adult cat.
I am the first cloned monkey. I was born at a research centre in the USA
Loot at the textbook. There are some pictures and they show the cloning animals in the world.
Do you think it would be a good idea to clone humans some day?
However, some other students think it necessary to prohibit …, for …
In my opinion, …
Do you think governments should pass laws to prohibit human cloning? Why or why not?
Party A
They shouldn’t, for…
reasons:
1. Cloning can help cure many diseases and save a lot of people’s lives.
But cloning still has some problems. The scientists found that the cloning animal’s Gene has a little different from the original animal. So the life will shorter than the real life. The fact proved that, the cloning sheep Dolly has died. It only has the half life of the common sheep.
the world’s most famous sheep
Dolly (5 Jul. 1996 – 14 Feb. 2003)
Dolly was the first cloned mammal created by a Scottish scientist and his group in 1996. Dolly was world famous because she was exactly the same as her mother, in appearance and in genes.
2. … 3. …
Party B
They should, for…
reaБайду номын сангаасons:
1. Cloning can lead to ethical (伦理) problems.
2. …
3. …
Example
When the cloning technology improves so quickly, many scientists and doctors have different opinions, someone think it is good but someone think it is bad. Cloning can bring many benefits to the human, such as rejuvenation, helpful for Defective genes, Liver failure, Kidney failure and Leukemia. These disease are very different to cure, if we use the cloning technology we can change the Gene’s DNA order, so we can save lots of people.
Do you think the cloned animals are as healthy as the natural ones?
Dolly isn’t, but scientists do not yet know whether this is the exception or the rule. Some early evidences suggest that clones may have health problems and that they may age prematurely (早衰的，未老先 衰).
What is cloning?
Cloning is a way of making an exact copy of another animal or plant. It includes natural cloning and manmade cloning.
How is a clone produced?
What problems may arise when humans are cloned?
People may want to clone themselves so they can live forever. People may want to clone dead children.
People may want to clone their favourite pets.
A clone is an animal or a plant copied from the cell of another animal or plant. The two animals or plants are exactly the same.
What has already been cloned by scientists?
Why or why not?
What benefits can humans gain from cloning?
Medical cloning can help cure serious illnesses that ruin one’s quality of life.
It can help infertile people have babies.
In my own opinion I agree to clone the endangered animal and disagree with cloning
human. Because I think the cloning technology should be respected. It really can bring us many benefits; further more it can develop the science of human. If clone the human, there will, however, be many problems, the population is the biggest problem. Maybe some people will use the cloning people to start the war. So I am against cloning human.
What do you think of human cloning?
What’s your opinion of cloned food?
Have you ever wished you could have a clone of yourself to do homework while you had a rest or went out with your friends?
Giving an oral report
Today our class had a discussion about whether the governments should pass laws to prohibit human cloning.
Some students think that the governments should, for …
The cloning of plants is simple and relatively easy. It can be done by taking cuttings (man-made cloning) or letting the plant produce its own runners (natural cloning). The cloning of animals is more complicated. It was not achieved until 1996 and is fully explained in the first reading.
Do you think that human beings should try to control nature?
Should we do anything against the laws of nature? Why or why not?
What do you know about clones?