Double Trouble Or Extra Special

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Double Trouble Or Extra Special

Imagine having a twin that looks and acts exactly like you. Even more
interesting
this twin is a product of scientific cloning. If scientists have their way,
identical replicas
of human beings will be roaming the earth. This scientific vision may occur
a lot more
recent then many think. Cloning can be (better) understood by looking at
it’s definition,
process, and some examples.
This first step to better understanding cloning is to hear precisely what
it is.
Cloning can be defined as an organism or group of organisms derived from
another
organism by an asexual reproductive process. Usually members of a clone are
identical
in genes (Clarke, 1). Even though the definition is relatively simple, it
will be several
years before these projects will be technically feasible. Many species are
being
considered for cloning, but legal battles often halt the complex process
(Grossman, 1).
Knowledge of the definition of cloning helps one better understand its
difficult process.
The process of cloning is long and tedious and most uncommonly
unsuccessful.
After many years of failure to clone using adult animals, most scientists
started to think it
was too tough. However Ian Wilmut of the Roslin Institute in Scotland found
a new
successful method (World Book, 1). It should also be noted that adult males
have the
lowest success rate of cloning (Okimoto, 2). The actual process of cloning
is due to
recent advances of Genetic Engineering. Scientists can now isolate an
individual gene
from one organism and grow it in another organism belonging to a different
species
(Clarke, 1). While this is occurring a scientist can also take a cells
chromosomes and
nucleus, and inject them into a fertilized egg whose own nucleus has been
removed
(Clarke, 3). However another new process that was used to clone the worlds
most
famous sheep, is starting to be used more often. This new process involved
taking
mammary-gland cells from a sheep and starve them of growth, then electrically
inject an
egg which was later transplanted into a surrogate mother. Out of 300
attempts, only one
survived the process, Dolly a lamb born in 1996 (Worldbook, 1). The creation
of Dolly is
one of only a few examples that have ended in success . Having familiarity
with the
process of cloning helps one understand some cloning experiments.
With odds like one out of 300 (the Dolly experiment) successful clones,
good
examples of cl

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