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you because genes that are critical in early embryogenesis, are still active in the genome of the donor cell. Interestingly, among all mammals have already been cloned, efficiency is slightly higher in calves (approximately 10% to 15%). On the other hand, an intriguing fact is that there is still no news of monkey or dog that has been cloned. Perhaps this is why the English scientist Ann McLaren asserts that failures in reprogramming of somatic nucleus may constitute an insurmountable barrier to human cloning. Still, people like Antinori Italian physician, or sect of the Raelians, defend human cloning, a procedure that has been banned in all countries. In fact, a document signed by the science academies of 63 countries, including Brazil, in 2003, asking for a ban on human reproductive cloning. The fact is that the mere possibility of human cloning has sparked ethical discussions in all segments of society, such as: Why clone? Who should be cloned? Who would decide? Who will be the father or mother of the clone? What to do with the clones are born bad? In fact the biggest ethical problem now is the enormous risk associated biological reproductive cloning. In my view, it would be the same thing as discussing the pros and cons regarding the release of a new medication, whose effects are still devastating and totally uncontrollable. Despite all these arguments against human reproductive cloning, cloned animal experiments have taught us much about cell function. On the other hand, the technology of nuclear transfer for therapeutic purposes, the so-called therapeutic cloning, can be extremely useful for obtaining stem cells. ZATZ, Mayana. Cloning and stem cells. Journal Science and Culture, Jul / Sep. There are the problems of technique that feed more ethical discussion. The possibility to influence the character of individuals and eugenic deviations that may emanate from him, or quarrel between a right to health and a right to a genetic inheritance unmodified, are important points that seem based on a fundamental question: does have the right to manipulate the human genome? Man may become the object of their technique to program, take your own evolution? (CANTO-Sperber, 2003, p.691)
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što zbog gena koji su ključni u ranom embriogeneze, još uvijek su aktivni u genom donatorske stanice. Zanimljivo, od svih sisavaca već klonirana, učinkovitost je nešto viši u teladi (oko 10% do 15%). S druge strane, intrigantna činjenica je da još uvijek nema vijesti o majmunu ili psa koji je klonirao. Možda je to razlog zašto engleski znanstvenik Ann McLaren tvrdi da neuspjesi u reprogramiranje jezgre somatske može predstavljati nepremostivu prepreku ljudskog kloniranja. Ipak, ljudi poput Antinori talijanskog liječnika, ili sljedbe Raelians, obranu ljudskog kloniranja, postupak koji je zabranjen u svim zemljama. Naime, dokument potpisan od strane znanstvenih akademija 63 zemalja, uključujući Brazil, 2003, traži zabranu ljudskog reproduktivnog kloniranja. Činjenica je da je sama mogućnost kloniranja čovjeka izazvala etičke rasprave u svim segmentima društva, kao što su: Zašto klon? Tko bi trebao biti kloniran? Tko će odlučiti? Tko će biti otac ili majka klon? Što učiniti s klonovi su rođeni loše? Zapravo najveći etički problem sada je ogromna rizik povezan biološku reproduktivnog kloniranja. Po mom mišljenju, to bi bilo isto kao raspravlja o prednostima i nedostacima u vezi s izdavanjem nove lijekove, čije posljedice još uvijek poražavajući i potpuno nekontrolirano. Unatoč svim tim argumentima protiv ljudskog reproduktivnog kloniranja, kloniranih životinja eksperimenti nas je učio mnogo o stanične funkcije. S druge strane, tehnologija nuklearne prijenosa za terapijske svrhe, tzv terapijsko kloniranje, može biti izuzetno korisna za dobivanje matičnih stanica. ZATZ, Mayana. Kloniranje i matične stanice. Časopis znanost i kulturu, srpanj / rujan 2004, vol.56, br.3, str.23-27. Postoje problemi tehnike koje se hrane više etičku raspravu. Mogućnost utjecati na karakter pojedinaca i eugeničke odstupanja koja mogu proizaći iz njega, ili svađe između prava na zdravlje i pravo na genetsko naslijeđe nepromijenjeni, su važne točke koje se čini temelji na temeljno pitanje: ne imaju pravo da manipuliraju ljudskom genomu? Čovjek može postati predmetom njihove tehnike kako bi programa, uzeti svoju evoluciju? (CANTO-Sperber, 2003, p.691)