生物技術(shù)藥物,12。stemcell-在線瀏覽
2025-02-25 02:16本頁面
【正文】 ns ? Expensive ? Not efficient ? Cloned products can?t be marketed Cloning Definition: The process of making identical genomic copies of an original animal. Encyclopedia Britannica: An individual anism that was grown from a single body cell of its parent and that is geically identical to it. Brief History of Cloning ? 1902: Walter Sutton proves chromosomes hold geic information. ? 1902: German scientist Hans Spemann divides a salamander embryo. ? Spemann proposes a “fantastical experiment” Brief History of Cloning ? 1952: Briggs and King clone tadpoles. ? 1953: Watson and Crick find the structure of DNA. ? 1962: John Gurdon clones frogs from differentiated cells. ? 1963: . Haldane coins the term ?clone?. Brief History of Cloning ? 1977: Karl Illmensee creates mice with only one parent, ? 1984: Twinning create geic copies from embryonic cells. ? 1996: First animal cloned from adult cells is born. The Cloning Process ? 1978: Splitting embryos ? 1986: Embryo Cloning ? 1994: Embryonic cell line cloning ? 1996: Adult or Somatic cell cloning Creating Dolly Cloning by Nuclear Transfer Stage 1 Cell collected from a sheep?s udder. Stage 2 Nucleus is removed from unfertilized egg of second sheep. Stage 3 Udder cell is inserted into egg with no nucleus. Stage 5 Electrical charge is supplied. Stage 4 Insertion is successful. Stage 6 Cells begin to divide. Stages 7 amp。Stem Cells amp。 Regenerative Medicine ? Transgenic Animals ? Cloning ? Stem Cells amp。 8 Cloning Facts ? Plant cloning has been around for thousands of years ? Farm animal cloning has been around for over 20 years ? Cloning is a form of asexual reproduction ? Clones aren?t exact copies ? Cloned animals are safe to raise and eat Cloning Fallacies ? Geic makeup is altered ? Mutants are created ? Clones are unhealthy ? Will eventually lead to cloning humans ? Possible to recreate people such as Hitler House Bill 2505 Human Cloning Prohibition Act ? Prohibition on human cloning ? Criminal Penalty: Up to 10 years imprisonment ? Civil penalty: Minimum 1 million dollar f
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1