Chromosome 9
Disease
Ridley also discusses about diseases in this chapter. He starts off with
a discussion of variation in blood type. He also talks about the
previous theory that the variation, like some others, was actually an
effect
of random genetic mutations instead of just natural selection. But on
the other hand, it is also able to be linked to immunity and
susceptibility to different diseases. These diseases include cholera
which is linked to A and AB types and malaria which is more susceptible
in O types. One example used in this chapter is malaria. Malaria occurs
more in the African American population where they have a higher chance
of having a gene linked to sickle-cell anemia. However they have an
allete that's more resistance to malaria. There is a known link of
immunity to malaria that affects the susceptability of that individual
to sickle-cell disease.
No comments:
Post a Comment