Suppose that three RFLP sites and two VNTR sites are used to make a DNA fingerprint of a particular person. One difference between DNA fingerprinting and ordinary fingerprinting is that with DNA fingerprinting, parts of the fingerprint can be passed on to your children. An MZ twin pair has the same set of genes. A DZ twin pair is also known as fraternal twins. This means that . . .
Twin studies are available showing that genetic factors probably play a role in schizophrenia.
Identical twins are not much more likely than other siblings to develop the same kind of cancer. Cancer can be described as the growth and division of cells on their own schedule, rather than on a scheduled determined by, and integrated with, the other cells of the tissue or organ. In Jamaica, people who have almost pure African heritage sometimes marry people who have almost pure European heritage. One of the risks of gene therapy is that if it is successful in causing the production of a protein that was missing before, there may be an immune reaction to that protein. One might think from the term gene therapy that the cure, if successful, might be permanent.