A copying machine for living beings?
Without any doubt, if there had been
elections for the animal of the year 1997,
Dolly would have been the winner!
Dolly is a Scottish sheep that you see in
5 the photo. But Dolly is not just a simple
sheep. She is a clone of another sheep.
A clone means: a copy. Cloning means
copying from a single master copy'.
Scientists succeeded in creating a sheep
10 (Dolly) that is identical to a sheep that
functioned as a 'master copy.
It was the Scottish scientist lan Wilmut
who designed the 'copying machine for
sheep. He took a very small piece from
15 the udder of an adult sheep (sheep 1).
From that small piece he removed the
nucleus, then he transferred the nucleus
into the egg-cell of another (female)
sheep (sheep 2). But first he removed
20 from that egg-cell all the material
that would have determined sheep 2
characteristics in a lamb produced from
that egg-cell, Ian Wilmut implanted the
manipulated egg-cell of sheep 2 into yet
25 another (female) sheep (sheep 3). Sheep 3
became pregnant and had a lamb: Dolly.
Some scientists think that within a few
years it will be possible to clone people as
well. But many governments have already
30 decided to forbid cloning of people by law,
make at least 10 question answer from the above passage
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Answer:
why was dolly special
what is a clone
who designed the copying machine
where was the person from
how did he do it
what have goverments decided
what did he take from the first sheep
how did sheep 3 become pregnant
what do some scientists think
when was dolly cloned
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