Paragraph 1
A
shows that while identical twins can look
, they are not clones of
other. Scientists analyzed the DNA from 387 pairs of identical twins. These are people born from a
fertilized egg. The scientists looked for mutations in the
stages of development. A
is a tiny change in the
of the DNA. This can occur when a
divides. This change causes a
difference in the DNA when it duplicates. A tiny change can create differences in height, intelligence, eye colour and even in how
someone can catch a disease.
