cloning humans
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About Human CloningTRANSCRIPT
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Cloning Humans
Scott Stewart
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Definition and types Cloning is the production of 1 or more individual
plants or animals (whole or in part) that are genetically identical to an original plant or animal.
I’ll discuss two types: (1) Reproductive cloning (aka adult DNA
cloning) (2) Therapeutic cloning (aka biomedical
cloning)
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Reproductive cloning Produces a duplicate of an existing animal Dolly and the Raelians DNA from an ovum removed and replaced with
the DNA from a cell removed from an adult animal
The fertilized ovum (called a pre-embryo) implanted in a womb and allowed to develop into a new animal
Very controversial: banned in many countries
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Reproductive cloning
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Therapeutic cloningInitial stages identical to reproductive cloningHowever, stem cells are removed from from the pre-embryo to produce tissue for a whole organ for transplant back into the person who supplied the DNA
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Therapeutic Cloning 2
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Totipotent and Pluripotent stem cells
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Somatic Cell Nuclear Transfer
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Goals: Produce healthy organs, drug testing, experiments
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Controversy Some concerns are held for all forms of
cloning, others are specific to one form or the other