专外Clone.ppt

1. What?is?cloning? Cloning?refers to asexual?organisms through?somatic cells?reproduction,?and population?from asexual?genotypes?formed by?identical offspring?of individuals. Today,?the meaning of?cloning?is not only the?clone,?all?from the same ancestor,?a group of?individual?asexually produced,?also called? clone. 2.Development Cloning?technology is also known as the?biological?amplification technology,?it?has experienced three stages: The first?stage?is the?period of?microbial?clones, which uses a?bacteria?can be quickly?copied out of?tens of thousands of?it?as like as two peas?and?bacteria,?and become a?group of bacteria;? The second period is biological cloning technology?period,?such as the use of?genetic?basis?for?a?DNA; The third period?is the?period?from?animal cloning,?a?cell clone?into an?animal. Cloned sheep?Dolly“ is?composed of?somatic cell cloned?a sheeps,?is used in?animal?cloning technology. Great?breakthrough In 1997?February the British?Roslin?Wermuth Institute?research?group released?the somatic cell cloned sheep Dolly?successful cultivation,?it is?the worlds first?cases of?animal?somatic cell nuclear transfer?was born,?is a great?breakthrough in the study of?cloning technology.? Human cloning The somatic cell cloned sheep Dolly?was born.Human cloning quickly became?the focus of world attention,?with?cattle,?pigs,? rats?and?monkeys?and human?biological characteristics?that?most? primate?animal?similar?have been?cloned successfully, one day,?scientists will?clone the Dolly?of human. 3.Application prospect of?cloning Cloning technology?has shown?broad application prospects,?summed up in?the following four?aspects:? (1)?the cultivation of good?breeding?and production?of experimental?animal; (2)?the production of transgenic?animal; (3)?the production of human?embryonic stem cells for?cell and tissue?replacement therapy;? (4)?replicate?endangered?animal?species,?preservation and dissemination of?animal?species res