There are three different kinds of cloning;
identical twins that aren't natural, the nuclear technology transfer and real
cloning. Identical twins have all the same genes-that's the reason they're
identical-and can be made in laboratories. Scientists simply have to divide the
zygote (fertilized egg) in half. However, this must be done before the cells
divide themselves. Scientists have tried using this method to clone humans, but
have never succeeded. The nuclear technology transfer is when the DNA and
nucleus (center) of a molecule and then put it into another cell. This must be
done before the cells develop. When the cells develop, they become a cell of a
certain part of your body, for example a certain brain or muscle. When they do
that they start to only use the
DNA of that part of your body. Real clones are made with adult animals, so
scientists must first force the cells to use all the DNA. They then transfer
that DNA to a non-fertilized egg of the same species. When the egg is
fertilized, the baby uses the DNA put there to form and it looks identical to
the animal that the DNA was taken from because they have all the same genes! A
goat, Dolly, was successfully created like that recently. WARNING: don't
try this at home with your pet dog or cat, your parents won't be happy. Many
people believe that scientists who work on cloning are crazy people who want to
have the power of God in their hands. Here are the 4 main reasons why people
support cloning:
1) They want to support scientific research
2) They want to make a copy of themselves
3) They want to create a superhuman race
4) They want to give their babies the intelligence or the beauty of another person
Links
What are Genes? + Genetic Diseases