Поиск

Полнотекстовый поиск:
Где искать:
везде
только в названии
только в тексте
Выводить:
описание
слова в тексте
только заголовок

Рекомендуем ознакомиться

Остальные работы->Реферат
Abnormal psychology has much in common with psychiatry, while physiological psychology builds on the techniques and methods of neurology and physiolog...полностью>>
Остальные работы->Реферат
Jackson s policy regarding the Indians was wrong. Indians who lived to the east of the Mississippi were recognized by the United States as a free and ...полностью>>
Остальные работы->Реферат
I lost my report but I will come to this site and give it to you when I find it, I filled out another application saying the same thing in this site, ...полностью>>
Остальные работы->Реферат
Each of us throughout our lives encounter or discover a person who exhibits that he/she is an excellent person. They are superior to those we consider...полностью>>

Главная > Реферат >Остальные работы

Сохрани ссылку в одной из сетей:

Twenty years ago, scientists said that cloning was completely impossible. But now, the science of cloning

has come to realization. Imagine meeting an exact replica of somebody. They look alike, think alike, and

even have the same genetic makeup. No, this isn’t an episode of Star Trek, this is reality. This is the new

world of cloning, and thanks to a 7-month-old sheep named Dolly, a new science has been born. As with

every new science, there are those who believe in it, and those who oppose it. The new technology of

cloning should be utilized because it could bring back extinct organisms, help infertile couples to have

children, and potentially save many lives.

Cloning could bring back extinct animals. Over millions of years, thousands of different species

have gone extinct. Most were due to “natural selection”, while several others were due to human

intervention. According to the Encarta Encyclopedia, 1997, “nearly two-thirds of all the native bird

species and one-tenth of the native plants originally found on the Hawaiian Islands have gone extinct

recently. Most of these losses have been of species unique to the Hawaiian archipelago. Predators,

competitors, or diseases introduced by humans from continental areas are responsible for many of the

extinctions. Many remaining species on oceanic islands are threatened or endangered.” With cloning, many

of the animal species, and potentially several of the plant species could be brought back to life. Even

though there is currently no technique for bringing the plants back, with technology advancing so quickly,

we could have a solution quite soon. Cloning, though now limited to an!

imal subjects, potentially has significant human applications.

Cloning will help a couple who would normally be unable to have children because one of them was

infertile. In the case of an infertile father, scientists take an egg from the mother, remove its nucleus, then

take a cell from the father, remove its nucleus, and place the nucleus inside the empty egg. That cell now

acts as a reproductive cell. They then put the egg in the mothers’ womb, and wait for results.

Unfortunately, this method has a very low success rate. According to Gina Kolata of the New York Times,

February 23, 1997, in the experiments with the sheep, 277 cells were attempted. Twenty-nine of those

developed into embryos. When those cells were transferred to the female sheep, only thirteen became

pregnant. Of those thirteen, only one carried the pregnancy to full term and delivered a live lamb.

However, with the ever-progressing technology, scientists will be able to achieve higher success rates. The

power of cloning can not only be used to create life, it !

can also be used to save it.

Cloning has many medical benefits that could be utilized. It could be used to replicate organs from

animals that would be suitable for transplant into humans. This process would increase the amount of

people who could be saved. Since there would be more organs, the waiting lists for transplants would

become much shorter. According to James Glassman or the Denver Post, February 26, 1997, “Engineered

animals like pigs could be cloned and harvested for organs to transplant into sick humans”. This would be

much easier, because you don’t have to wait for an organ donor. Cloning can also recreate certain

genetically engineered animals that carry helpful substances. In the case of the sheep, the main product that

they are trying to get is AAT, a sheep’s milk now in clinical trials for use in treating cystic fibrosis.(CNN

on-line, February 23, 1997) Also, according to the Grolier Electronic Encyclopedia, 1992, “clones have

produced such medically important substances as Insu!

lin, interferon, and growth hormone”.

Due to the overwhelming positive implications, society must embrace this new technology. The

science of cloning should be used because it could resurrect extinct animals, give couples a new hope, and

medical science now has a new tool that could potentially save thousands of lives. Cloning, once the stuff

of science fiction, will with recent advances become an integral part of our society.


Загрузить файл

Похожие страницы:

  1. Cloning Essay Research Paper CloningTwentyfive years ago

    Реферат >> Остальные работы
    Cloning Essay, Research Paper Cloning Twenty-five years ago, scientists thought that cloning was ... virtually impossible. In the last five years ... F01). “Other research applications of cloning would involve ...
  2. CLONING Essay Research Paper Should we clone

    Реферат >> Остальные работы
    CLONING Essay, Research Paper Should we clone humans? Cloning humans has become a possibility that ... today’s society than it was twenty years ago. It is a method that ... this experiment occurred almost two years ago. Evidence from these experiments got ...
  3. Cloning Essay Research Paper CLONINGCloning humans has

    Реферат >> Остальные работы
    Cloning Essay, Research Paper CLONING Cloning humans has recently become a possibility ... today s society tan it was twenty years ago. It is a method that involves ... , this experiment occurred almost two years ago and triggered almost an ethical ...
  4. Cloning Essay Research Paper Cloning the process

    Реферат >> Остальные работы
    Cloning Essay, Research Paper Cloning, the process of ?Manipulating a ... public about 30 years ago. This idea of cloning about his ... 13) Twenty years ago, when only the lowly tadpoles had been cloned, ... . The cell being cloned has undergone years of mutation, and ...
  5. Cloning Essay Research Paper The biological definition

    Реферат >> Остальные работы
    Cloning Essay, Research Paper The biological definition of a clone ... to use for the twenty-first century. Cloning has progressed so quickly ... . First produced four calves. Two years later, Dr. Ian Wilmut and ... father when he was my age, and currently I am under ...

Хочу больше похожих работ...

Generated in 0.0013840198516846