Matthew Vogel
Period 1
GENETIC ENGINEERING
A wonderful example of genetic engineering
was scientists
taking a mouse that was
fr
ozen for
twenty years and cloning
it. To do this, t
he
y had
to thaw
out
brain cells
and rem
ove
the nucleus
from them. Then they
united
each nucleus
with an unfertilized egg
from the brain cell that it had
been
originally
removed from
and
gave each egg an electric shock
,
which stimulated the
activation of the sperm
.
The clone embryo was injected into mouse wombs w
hen it was seen that
s
ome
eggs had begun
dividing normally into clones of the original mouse
.
It was amazing that
this experiment was a success because the mice had not been treated in any special way before
being frozen.
1.
http://www.technologyreview.com/blog/editors/23577/
2.
http://www.globalchange.com/cloning
-
of
-
mouse
-
frozen
-
for
-
16
-
y
ears
-
what
-
next.htm
3.
http://www.technologyreview.com/biomedicine/24640/
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