Download Cloning Humans

Cloning Humans
Scott Stewart
Definition and types
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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)
Reproductive cloning
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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
Reproductive cloning
Therapeutic cloning
Initial stages identical to
reproductive cloning
However, 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
Therapeutic Cloning 2
Totipotent and Pluripotent stem
cells
Somatic Cell Nuclear Transfer
Goals: Produce healthy organs,
drug testing, experiments
Controversy
Some concerns are held for all forms of
cloning, others are specific to one form or
the other