... For example: A bacterial plasmid. Reproductive cloning on the other hand is a technology used to generate an organism that has the same nuclear DNA as an already existing or previously existing organism. Finally the Therapeutic cloning refers to the developing cells through nuclear transfer for clinical trails in ... because only the nuclear DNA or chromosomal DNA was the same as the donors. But some of the clone's genetic material came from the mitochondria of the cytoplasm of the enucleated egg. Mitochondria which are the energy sources of the cell, have their own short DNA segments. T...

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... "stem cell debate," and it is imperative that people appreciate the difference between Adult DNA Cloning and Therapeutic Cloning. Adult DNA cloning: (also known as somatic cell nuclear transfer) This process begins by removing an egg from a donor mother and extracting the nucleus, this creates an enucleated, essentially empty egg. Then, a somatic cell is taken from an individual to replace the existing nucleus and ... is electrically fused with the egg to start up its embryo making operation. (No matter how a somatic cell is obtained, it contains the DNA of the person, and thus contains...

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... combatted through the process of cloning. A scientist would take an ovum from a female donor, removing the nucleus and thus leaving an "empty" egg. From there, a single skin cell (somatic cell) would be removed from either, or both, parents and the nucleus from these somatic cells would ... rate. This process could also be applied in the situation of gay and lesbian couples. In a lesbian couple, the DNA of one mother would be combined with an egg extracted from the other mother figure, fertilizing it and reinserting it into the womb to carry out the development process. In ... a gay co...

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... are removed from a fertilized embryo and encouraged to develop into one or more duplicate embryos. Twins or triplets are thus formed with identical DNA (Nash 61). It seems that every week, newspapers report on new advances in the science of cloning. Everybody knows about Dolly the ... to create and other labs were unable to reproduce the results. In addition, it took over a year for the institute to test Dolly's DNA to make sure that it was, indeed, the same as that of the frozen mammary cells (Gedney 138). Science, although temporarily impressed, demanded ... complicated. Take an egg an...

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... the humans failed. The second method of cloning is achieved by using an adult cell, not an embryo. To do this scientists remove an egg cell from a female, and remove the chromosomes, nucleus, etc, leaving no way for the mother to interfere with the genetic part of the reproduction. ... baby develop. The result: a physical clone of the animal. The process for cloning Dolly was as follows: The nucleus is removed from an oocyte or non-fertilized egg, collected from a Scottish blackface ewe. A nucleus from a quiescent mammary cell is injected into the oocyte. A quiescent cell is one that has ...

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... and ovaries from females) dogs and cats, or from an abattoir in the case of livestock. The egg is typically matured for about 24 hours so that the genetic material (DNA) is congregated in the nucleus. Using the syringe system to create a gentle suction, the egg is held in place by the holding pipette. The enucleation pipette is then used to pierce the ... eggshell and penetrate the egg membrane. Suction is applied and the nucleus containing the genetic material is removed and ... transferred to surrogates at different times. The concept of cloning conceptually is very simple. What you ...

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... animal. An electric current is passed trough the two cells to fuse them together. The parent stem cell now begins to direct the function of the enucleated egg cell. The two cells have now become one. This new cell is placed in side the uterus of a surrogate mother and would then be allowed to ... stem cell . By reading the previous paragraph you have looked into the world of cloning and it is pointed out the cloning is not the writing of DNA , or genetic code. The process is not very evasive to the animals and they are unharmed during the whole process. And still, the final product is .....

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... the actual cloning of humans does not seem likely to occur in the foreseeable future. Genetic engineering is the changing of an organism's DNA, genetic material to eliminate unwanted traits or to produce desirable traits. The earliest form of genetic engineering dates back to the scientist Gregor ... transplanting an adult cell's nucleus into a fertilized egg. This process is called nuclear transfer and was initially used to clone a frog in 1952 (Sinha 59). Using this process, nuclear DNA from the body cell of a donor frog was injected into the egg cell of a recipient frog whose nuclear ...

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Bioethics on human cloning. Introduction Cloning is an replication of another living thing which has the same DNA content with the original organism. The characteristics and features of the clone will be as the same as the original organism because the content of DNA is totally the same. The first successful cloning Doly the sheep Biological significance Human somatic cell nuclear ... transfer, otherwise known (somewhat inaccurately) as creating an embryo by "cloning," involves1: The starvation and subsequent implantation of DNA from specialized, non-sexual cells of one organism (e.g., cells ...

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... a unique sheep named Dolly. Dolly was a clone sheep born on February 12th 1997. Cloning is the process of creating a genetic duplicate of an individual. It involves taking DNA from an organism, living or dead, and replacing the nucleus of the egg with it. This would mean that an individual would grow with the exact genetic make-up of the person that the ... DNA was taken from. It needs no sperm to fertilise it as it already contains a full DNA strand, unlike the process involved with normal fertilisation where the sperm holds half ... the strand and the egg holds the other half. Up unt...

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... has the same genes as its parent. You take an egg and remove its nucleus, which contains the DNA/genes. Then you take the DNA from an adult cell and insert it into the egg, either by fusing the adult cell with the enucleated egg, or by a sophisticated nuclear transfer. You then stimulate the reconstructed egg electrically or chemically and try to make it start to ... divide and become an embryo. You then use the same process to implant the egg into a surrogate mother that ... humans is only to be used in a marriage between husband and wife. Cloning only involves one parent, therefore i...

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... transferred the nucleus of a salamander embryonic cell into a cell with no nucleus. Using a strand of hair, he tightened a loop around a newly fertilized egg, until he separated the nucleus and some of the cytoplasm. The side with the nucleus divided until it has sixteen cells. Spemann then loosened the loop ... didn't have a clue of how to do it. A very significant contribution came in 1944 when American Oswald Avery located the nucleic acid DNA as the carrier of genetic information, instead of proteins in the cell. Further insight into this concept came in 1950 when Alfred Hershey and ...

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... got to be the large-scale discussion it is today. In 1938, Hans Spemann thought of a "fantastical experiment" to transfer one cell's nucleus into an egg without a nucleus. That is the basic thought in the process of cloning. In 1944, Oswald Avery discovered that genetic information was carried by the nucleic acids ... a clone of a monkey was done in March of 1997. That brought the cloning close to humans due to the relative likeness between primate and human DNA. There are many benefits to cloning. Many of the reasons people really want to see the cloning continue are the medical benefit...

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... called "mesokaryotic" because of their unusual nuclear organization. While the DNA of most other eukaryotes forms fibrils that are 10nm wide, the DNA of dinomastigotes is only 2.5 nm wide. Also, eukaryotic DNA usually only condenses during mitosis, but the DNA of organisms in this phylum is always condensed. This is ... condensed this means the genome is turned off, but the genes of dinomastigotes continue being expressed even though their DNA is condensed. Interphase, prophase, metaphase, anaphase, and telophase do not occur during mitosis in these organisms. ... with other pigments l...

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... an embryo and encouraging the cell to develop into a separate embryo with the same DNA as the original (Robinson). In vitro fertilization is a form of cloning in which sperm and an egg cell are mixed together on a glass dish (Robinson). After the sperm and egg have united, the zygote (fertilized egg) can either be inserted into a female body to mature into a fetus, or it ... successful cloning of a mammal using a cell from an adult sheep had occurred. "Dolly, a seven-month old sheep, was displayed to the media; she is the first large cloned animal using DNA from another adult" (Robinson...

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... think of problems with organ transplant rejection as one small example. By definition, all cells contain cytoplasm. Cytoplasm is everything inside the cell membrane and outside the nucleus (or DNA containing region in bacteria). Cytoplasm is mostly water. Besides water, cytoplasm contains dissolved salts, organic molecules such as proteins, and ribosomes. In eukaryotic cells, the cytoplasm also ... designations cannot be established by the biological-species concept for prokaryotes, which you will recall reproduce asexually by binary fission. So with prokaryotes nowadays, species are des...

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... person being cloned. "To clone any animal, Navara says the first step is to take the DNA out of an egg. DNA is the part of a cell that tells it what to do. Then, scientists inject the DNA from the organism they want to clone into that egg and try to get it to divide and grow into an embryo. In reproductive cloning, the embryo ... is then implanted into a surrogate, where it is supposed to continue to develop" (Discovery 1). What cloning does is that it copies the DNA/genes of the person and creates ... ...

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... naturally outside the body in the seawater. The cytoplasm is relatively clear, so fertilization is observed easily. On a brief history on fertilization, the sperm enters and binds to the egg surface. This induces a calcium wave that causes the cortical granules , to fuse with the plasma membrane, releasing their contents and causing the fertilization membrane to rise. The sperm is ... then pulled into the egg where it moves to the egg nucleus and fuses. DNA synthesis occurs along with duplication of the centrosome. Nuclear envelope breakdown and chromosome condensation leads to the meta...

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... year old girl , which was the first human trail approved in the United State. Gene Therapy is the process of replacing a defective gene inside a patient's DNA with a working gene that will produce the correct gene products. But in order to carry a working gene to replace a defective gene is that it must ... thing in common which is, that the tissues being treated are somatic (somatic cells include all the cells of the body, except sperm cells and egg cells). The difference between replacing defective genes in germline and somatic cell therapy is that , in the germline cells (which contri...

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... , human cloning is quickly becoming a reality. The basic technique used to clone humans and animals, somatic-cell nuclear transfer, involves the insertion of DNA from a somatic cell into an egg which has had its nucleus removed (Appendix A.2). The egg begins to divide and develop into an embryo which is implanted into the uterus of a surrogate female, where it is carried to term and ... delivered(Appendix A.3). A clone is genetically identical to the person or animal who provided the somatic cell that provided the DNA. Much of the new laws being drafted to prevent human ... would be ide...

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... to society. There are many reasonable methods of cloning. For instance, the use of cloning for medical purposes can be helpful in taking human DNA and creating new body parts. Because of the shortage of donors, this could become a valuable asset to our society. Cloning of human body ... in the field of medicine could have practical applications. For example, genes from humans that produce necessary proteins could be included in the animal DNA so that the animal would produce that protein in its milk or blood. That protein could then be extracted and used in treatment for ... an abnormali...

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... Using somatic nuclear transfer, Wilmut and his team of researchers inserted the nucleus of an adult udder cell into a sheep egg cell whose nucleus had been removed. When the egg with the new nucleus begins to divide, Wilmut implanted the developing embryo into the uterus of another sheep, the surrogate ... mother who gave birth to Dolly. Similar to the case of dolly, "An egg would be removed from a woman's ovary and its genetic material removed. Cells would be taken from the human being cloned and the genetic material ... from these cells would be injected into the egg. The human embryo...

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... animal that is genetically identical to its "parent." In the cloning process, a scientist takes the genetic information of an organism and inserts it into an unfertilized egg cell from a member of the same species (MacKinnon, 4). The egg then begins to develop, functioning under the direction of its newly acquired genetic code, and eventually a genetically identical organism is created. (MacKinnon, 4). Yet, the ramifications ... (Nash, 1). It would be a delayed twin of a child for example. In addition, cloning presents an even greater danger. The replication and copying of DNA causes gr...

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... nature that is being defied and the government cannot take that away. True human cloning involves taking a somatic cell from a person and removing its nucleus. Then the nucleus of a fertilized egg cell is removed and placed in the somatic cell. This is impossible in humans right now because the somatic cells are specialized and there are many genes that have been ... learn how they can alter them to cause them to regenerate after injury. Also, the ways of reproducing genes and copying DNA could help in finding cures for certain diseases and disorders such as cancer, aids, and leukemia. ...

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... types of cloning or genetic research. The first and easiest method is called twinning. As the name implies all clones from this method are identical twins of each other. A fertilized egg is allowed to divide to the 32 or even 64 cell ball called a morula. The morula is nothing more than a 32 to 64 or even 128 cell ball of stem ... ). The second form is nuclear transfer, as was done in the case of Dolly the sheep. The neucleus contains the DNA, which is the genetic code of an organism. The process by which Dolly was made used an unfertilized sheep's egg. From that egg all genetic material...

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