Term paper on Cloning Animals
Cloning Animals Essays
While the free essays can give you inspiration for writing, they cannot be used 'as is' because they will not meet your assignment's requirements. If you are in a time crunch, then you need a custom written term paper on your subject (cloning animals)
Here you can hire an independent writer/researcher to custom write you an authentic essay to your specifications that will pass any plagiarism test (e.g. Turnitin). Waste no more time!
The cloning of animals will be beneficial to human beings inthe near future. Experiments in cloning animals started in theearly nine-teen-fifties. Over the next forty years, scientistswere only able to clone animals from very young embryonic cells. When these scientists tried to use older cells for cloning, theydid not get normal results. This led many scientists to believethat animals could not be cloned from adult cells. (Pennisi, 1997) However, this all changed in the Summer of 1995 with the birth oftwo lambs, Megan and Morag, at the Roslin Institute in Scotland. The birth of these two lambs led to one of the most astoundingbreakthroughs in scientific history, the birth of a lamb namedDolly. Megan and Morag were two lambs carried to term by a surrogatemother. However, Megan and Morag were not produced by normalbiological methods. Their genetic code came from the cells of anine-day-year old embryo. Thus, Megan and Morag were geneticcopies, or clones of this embryo. The key to this cloning was aprocess called nuclear transfer. This process requires the use oftwo cells, the donor cell and the recipient cell. The recipientcell is usually an unfertilized egg. Researchers at the RoslinInstitute used microscopic instruments, like a micro pipette, toextract all of the chromosomes from the recipient cell. Therecipient cell was then fused to the donor cell and placed into thesurrogate mother. The birth of Megan and Morag was a tremendousbreakthrough because these scientists proved that older cells couldbe genetically reprogrammed to act like cells in an early embryonicstage. (Wilmut, 1998) The research that went into the development of Megan and Morageventually led to the birth of the first mammal cloned from anadult mammal. To accomplish this, the research team at the Roslininstitute used cells removed from a six-year-old ewe s udder. These cells were then deprived of any nutrition, which forced thegenes to become inactive. The researchers did this because theywanted the cell-cycle stage of the recipient to be the same as thedonor s cell-cycle stage. The researchers then performed thenuclear transfer and tried to stimulate the inactivated genes tostart to develop into a new lamb. Only one out of two-hundred and
seventy-seven eggs produced a healthy lamb, which was named Dolly. The difference between...
MLA Style
. EssayMania.com. Retrieved on 12 Feb, 2012 from
<http://essaymania.com/97527/cloning-animals>
More College Papers
Antigone Vs. Kreon As A Tragic Hero
The debate over who is the tragic hero in Antigone continues on to this day. The belief that Antigone is the hero is a strong one. There are many critics who believe, however, that Creon, the Ruler of Thebes, is the true protagonist. I have made my own judgments also, based on what I have researched
History Of Harley Davidsons
1 The Evolution of Harley - Davidson You hear the roar of the engine. You smell the odor of exhaust. Whatcould it be? It s the Classic Harley - Davidson. To evolve is to develop gradually by a process of growth and change. (Rafferty 112). When you think of evolution there are alot of things t
J.D. Salinger
A recurring theme in J. D. Salinger's stories concerns people who don't fit in with the traditional American culture. Salinger's most successful tales are of those who cannot adjust to the real world. His main characters are super-intelligent humans who must choose between the phony real world (Amer