... as well as increase the yield of species being identified in comparison to the conventional method. The latest barcoding technique has given rise to a new emerging project that consists of DNA barcoding for microbial communities. The diversity among microbial species consists of microbes such as bacteria, algae, fungi, and protozoa. Each community has a unique combination of marker genes that assist ... the green algae, and rbcL-3p for the microscopic diatoms. As further research progressed it was found that the COX1 gene marker was a more susceptible marker in discovering cryptic dive...

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... and leads to misunderstanding of the methods scientists use in cloning. In clear terms, cloning is the process in which DNA of a female egg is replaced with different DNA from another cell. This process is referred to as the Nuclear Transfer or Nuclear Substitution. DNA molecules are the strings of protein that hold genetic coding. In this operation, the nucleus, which is the part ... of the cell that contains the DNA, is carefully removed from an unfertilized female egg and then replaced with the DNA from the cell of another person. The egg with the DNA from another person is then mani...

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... method of nuclear transfer. This process consists of transplanting, or injecting, the nucleus of an adult body cell into an enucleated egg (oocyte) of another animal or person. Convinced that past efforts to clone mammals failed because the donor cell that supplied the nucleus and the recipient ... egg were at different stages of the cell cycle, Wilmut et al. cut the supply of nutrients and thereby induced the donor cell to ... in which the cell stopped dividing. In this way, they were able to prepare the donor nucleus so that it would be compatible with the egg cytoplasm. This also en...

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... with exactly the same genetic material. Clones can be made from DNA. Scientists use DNA cloning techniques to reproduce specific genes. They first isolate a DNA fragment containing a particular gene. Then they combine the DNA fragment with the plasmid DNA to form recombinant DNA. This plasmid DNA can reproduce very easily, which also helps the new recombinant DNA replicate easily. So, scientist can generate large quantities of the recombinant ... DNA and the particular gene of interest. Animals can also be cloned. This is done by first destroying the nucleus of an egg cell from the speci...

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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 route of physical traits or disease through a family, but they can follow the way of genetic material by tracking RFLP's through generations if they have DNA from all the family members. To find a particular gene, geneticists look for RFLPs that are always inherited with it. Genes on a chromosome have one ... chance to be separated each generation during the formation of egg and sperm cells. At that time, pieces of the chromosomes turn into the new configurations that make each of us who we are. The closer two ... genes are, the likelier that they will enter the egg or sperm togethe...

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... carry a new gene into a cell, it cannot redirect the cells genetic machines to make thousands of copies of itself. Microinjection is a more modern method of artificially transferring genes. Unlike Recombinant DNA, it does not rely on biological vectors like plasmids or viruses. Microinjection is exactly what you would expect it to be by its name. It involves simply injecting gene material ... , who was engineered in Scotland, has been said to be a clone but in actual fact "she is less of a "clone" than are identical twins". Identical twins have identical DNA from the nucleus and egg subs...

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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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... 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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... could help an infertile couple 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 (Kolate 242). That cell then acts as a reproductive cell. Next, they then place the egg in the mothers' womb to impregnate. "Mark Sayer, an infertility expert at Columbia Presbyterian Medial Center in New York ... in the woman's uterus immediately, and freeze any extras for future attempts at pregnancy" (Kolate 242). The attempt...

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... gene to cells lacking that particular function, thus correcting the genetic disorder or disease. There are two main categories of gene therapy: germ line therapy, or altering of sperm and egg cells, and somatic cell therapy, which is much like an organ transplant. Germ line therapy results in a permanent change for the entire organism, and its future offspring. Unfortunately, germ ... in the alteration of bacterial genes. "Transforming bacterial cells is easier than transforming the cells of complex organisms" (Stableford 34). Two reasons are evident for this ease of manipulation: DNA e...

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... domestication itself. The actual study of genetics started long ago, with Mendel and his studies. Now scientists know much more of genetics and DNA. However, with the increased knowledge comes increases power, and with power comes the potential to abuse it. With the potential to abuse power ... pairs, two in each individual for each separate characteristic. He concluded that since an individual organism is formed from the union of one egg and one sperm, that only one factor was present in eggs and sperm, but when they united, the number was returned to two ... collection of molecules. T...

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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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... original animal. The first step in creating a transgenic animal is to identify and isolate the relevant gene or feature that you wish to change in the animal. The piece of DNA containing that gene is then inserted into a fertilized egg or embryo. According to the BUAV website (2000), "This can be achieved in a number of ways: 1) Microinjection of the ... DNA into the pronucleus 2) Retroviral transfer 3) The use of embryonic stem cells." In microinjection, the most common method, several hundred copies of the gene are injected directly into the pronucleus of the host egg. The modified em...

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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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... Dr Ed Wraith, 11/2002) Introduced genes, called transgenes, come form a species different from the host organism. By carrying this extra piece of DNA, an animal can synthesise proteins normally produced by other species. This has been possible in bacteria and organisms such as yeast for several decades. All ... in this way is called a recombinant protein." (Website 1, 2001) This is because it has been made by combining DNA from one organism (in this case a human) with the DNA from another organism (in this case a bacterium). The alternative source of insulin prior to the recombinant for...

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... the controversy on the issue of abortion stems from. Pro-life advocates define human life as beginning at the moment of conception, while pro-choice supporters claim that once the egg and sperm are united this is just a living organism and not a human life. If the fetus is a human then it is entitled to live under the Constitution and the Bill ... the fetus is a living organism from the moment of conception. Some may argue that a living organism cannot be considered a person, but what else can it be. Once the sperm and egg unite, the 23 chromosomes of each are brought together to form o...

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... are very complex and complicated machines but definitely not as complex as the human body, which is made up of cells! Every living thing is made up of DNA. When you make a copy of DNA you have a clone! A Clone is an organism, or group of organisms, derived from another organism by an asexual reproduction, reproduction without sex. Genes would come from a body ... are identical in their inherited characteristic that is, in their genes except for any differences caused by mutation. Identical twins, for example, who originate from the division of a single fertilized egg, are members of a c...

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... through chromosomes which reside in the nucleus of every living organism's cells. Each chromosome is made up of fine strands of deoxyribonucleic acids, or DNA. The information carried on the DNA determines the cells function within the organism. DNA discovery is attributed to the research of three scientists, Francis Crick, Maurice Wilkins, and James Dewey Watson in 1951. They were all later accredited ... engineering aims to take a dramatic short cut in the slow process of evolution.. In essence, scientists aim to remove one gene from an organism's DNA, and place it into the DNA of ano...

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... agriculture gives today's scientist's considerable advantages in plant breeding. Scientists can identify the specific gene for a given trait, copy it, and then insert the gene into another plants DNA. This method eliminates the "back-crossing", traditional plant breeders must do to eliminate extraneous undesired genes that are frequently introduced using cross-hybridization. Even with genetic engineering, scientists still ... use cross-hybridization to get rid of unwanted traits already in the plants DNA. Since the introduction of genetic engineering, it now takes 5 years to remove undes...

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... useful in manipulating genes. Third, E. coli and some other kinds of bacteria make special chemicals, or enzymes, that are able to cut through strands of DNA at specific places. With these enzymes, bacteria can cut the DNA of viruses that invade people bodies. Viruses are tiny organisms that grow and reproduce only when they are inside living cells. The bacterial enzymes can ... cut the virus DNA into harmless fragments. Since they help limit the growth of viruses the enzymes are called restriction enzymes. Scientists have now discovered several types of restriction enzymes. They have u...

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... bacterial cell wall in the lock-and-key manner. During penetration, a viral enzyme digest away part of the cell wall, and viral DNA is injected into the bacterial cell. Biosynthesis of viral components begins after the virus brings about inactivation of host genes not necessary to viral ... a host cell. After reaching the inside of the cell the virus is uncoated as the capsid is removed. The viral genome, either DNA or RNA, is now free of its coverings and biosynthesis proceeds. The other difference is that the viral release occurs by budding. Budding ... does not necessarily mean dea...

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