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A new
shows that while identical twins can look perfectly alike, it is not a
similarity. They are not clones of
other. Scientists at the University of Iceland analyzed the DNA from 387
of identical twins - babies born from a single
egg. The scientists compared the DNA with that of the twins' parents and children. The
looked for mutations in the early stages of
. A mutation is a tiny change in the sequence of the DNA that can occur when a
divides. This change causes a slight
in the DNA replication process. A single, tiny change can create differences in height, intelligence, eye colour and even in
to disease.
