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Sheep Cloning

             Cloning is one area of genetics that is advancing very rapidly, and it is therefore very controversial. A clone is a group of genetically identical cells descended from a single ancestor. A clone is made up of plasmids, groups of identical structures, that contain genetic material such as mitochondria and chloroplasts. Plasmids are found in bacteria and yeasts. The bacteria in yeasts are combined with an animal or plant genes that allow scientists to produce identical copies of the gene.
             Cloning is a very important subject in life because the cloned organisms are useful in research. Scientists can test different drugs and other chemicals on bacterial clones. .
             The history of cloning shows how far scientists have come with this area of genetics. This history is important because it lets us know how far cloning has come to include subjects, such as plants, animals, and humans. It is also helpful because we can look back and become educated about this topic. .
             Cloning plants was a lot easier than cloning animals. Plant breeders have been taking advantage of the ability of cloning for a long time. The clone will need to have exactly the same genes as the original. The farmer that grows these plants from seed never knows exactly how it's going to turn out. Cloning also saves time because, plants grown in test tubes bloom sooner than plants grown from seed. .
             Every year 8 billion trees are cut down for human needs. Cloning might solve the problem of cutting down to many trees. In 1998 an .
             Australian company ForBio announced a new technology for cloning and growing trees. This technology can help scientists produce about 1000 clones a day. At that rate it would be very expensive to produce this number of clones. ForBio could then produce 50 million trees by 3 years. .
             It is exciting to clone animals but it might be dangerous. It's not good to use animals just like it's something small. The cloning of animals is still in its early stages.


Essays Related to Sheep Cloning

1. Cloning

The last method, nuclear transplantation, has been recently used to clone a sheep. ... The issue of cloning lay dormant until 1996 when an actual sheep was cloned. ... The way that scientists cloned Dolly, the sheep, was by a process called somatic cell nuclear transfer cloning (McCuen 11). ... "Since the introduction of Dolly, the cloned sheep, the world has not been quite the same. ... Even the creator of the cloned sheep Dolly said he would, "find it offensive to clone a human being (McCuen 57)." ...

  • Word Count: 1715
  • Approx Pages: 7
  • Grade Level: High School

2. Human Cloning: Threat To Mankind

We have seen cloned animals like the famous Dolly the sheep. ... What about human clones? ... In 1997, the Roslin Institute in Scotland successfully cloned a sheep, which raised the question of whether cloning a human is possible. ... From 277 special cells developed 29 embryos which were microinjected into thirteen mother sheep and twenty-eight of embryos never made it to birth except one named Dolly (Yount, p.121). Scientists created three bull cabs clones and later Polly the sheep. ...

  • Word Count: 1508
  • Approx Pages: 6
  • Has Bibliography
  • Grade Level: High School

3. Cloning

Is cloning legal? ... What is cloning? ... Dolly the sheep was the first mammal to be successfully cloned. ... New studies are Cloning 7 showing that although Dolly is only three years old, she is aging at the rate of the six year old sheep from which she was cloned (AP- Verrengia 1999). ... To clone or not to clone is not the question. ...

  • Word Count: 1608
  • Approx Pages: 6
  • Has Bibliography
  • Grade Level: High School

4. Dolly The Sheep

This method of cloning, however, does not produce an exact replica of either parent, as in the case of Dolly, the Scottish white-faced sheep, because the splitting is done after the union of sperm and egg. ... She was created by taking a somatic cell from the udder of a white-faced sheep and depleting it of all nutrients so that it ceases to develop. It is then electrically fused with an egg taken from a black-faced sheep. ... Six days later, the one surviving embryo of 29, was implanted in the uterus of another black-faced sheep, who eventually gave birth to Dolly, an exact clone of the whi...

  • Word Count: 763
  • Approx Pages: 3
  • Grade Level: High School

5. Cloning

Mammalian clones of sheep were reproduced in this fashion as well in 1984. ... He was able to successfully clone a sheep without the use of embryonic cells. Dolly the sheep was successfully cloned by transferring the nucleus of a non-reproductive cell, a mammary cell, into an unfertilized sheep egg from which its own genetic material had been removed. Dolly was an exact clone of the sheep that donated the mammary cell. ... The egg began to divide and when it became an embryo it was placed into another sheep. ...

  • Word Count: 855
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6. Cloning

Human cloning isn't as scary as it sounds. In late February 1997 a British scientist named Ian Wilmut and his research team had cloned a lamb named Dolly from an adult sheep. Dolly was made by replacing the DNA of one sheep's egg with the DNA of another sheep's udder. ... Also, because of the extra steps involved, human cloning will always be riskier than an embryo transfer (It took more than 275 tries before the researchers were able to obtain a successful sheep clone). 20 years ago there was a similar concern over "test tube babies". ... In conclusion, there are many pro'...

  • Word Count: 525
  • Approx Pages: 2
  • Grade Level: High School

7. Cloning

In February 1997 Wilmut and colleagues at the Roslin Institute in Scotland report they have cloned a 6-year-old adult sheep from an udder cell. They name the sheep Dolly (after Dolly Parton). ... It took 277 attempts in order to successfully clone dolly the sheep. ... They inserted the silk gene of a spider into an embryo of a sheep, in order to produce silk-protein containing milk. ... It has been used to clone sheep, frog, and other mammals, but it has not been tried on humans. ...

  • Word Count: 2146
  • Approx Pages: 9
  • Has Bibliography

8. Cloning

Many people strongly opposed one of the first clonings of a sheep named Dolly. Dolly was a genetically cloned sheep that raised many questions. ... Cloning is believed as being omnipotent. ... One example would be that a U.S. institution incorporated into sheep the gene for human factor IX, which is used to treat hemophilia.(4) Test have proven that given the sheep has the right DNA strand, they can produce a medicine that could possibly cure hemophilia.(4) Another disease that is seriously being looked at it is, Cystic Fibrosis.(4) Sheep are being looked at as the closest animal in th...

  • Word Count: 1310
  • Approx Pages: 5
  • Grade Level: High School

9. Cloning

Cloning Cloning is when something is replicated or duplicated exactly resulting in to identical things. ... That egg was then placed into the uterus of a surrogate mother that eventually gave birth to the cloned animal leaving identical sheep. ... Unlike Dolly, these new lambs were made from sheep fetal cells. ... One was a human gene for a blood-clotting agent called factor IX, linked to a sheep gene that increases milk production. ... The cells were then isolated and used as donor cells in a cloning process that yielded sixty-two genetically engineered embryos, which were implanted in s...

  • Word Count: 479
  • Approx Pages: 2

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