e d g e
- education for disability and gender equity
|
|
||||||||||||||||||||||||||||||||||||||||
|
GENETIC DISORDERS 2.
Single gene disorders Some
disorders result when a mutation causes the product of a single gene
to be altered or missing. An example of this kind of disorder is sickle-cell
anemia. Mutations in the beta-globin gene cause blood cells to become
distorted and take on a sickle shape. A
normal blood cell is round, kind of shaped
like a donut without the hole cut completely through.
Examples of single gene disorders are: sickle-cell anemia, cystic fibrosis, Duchenne muscular dystrophy and Marfan syndrome. (Genetic Science Learning Center, University of Utah).
|
|||||||||||||||||||||||||||||||||||||||||
When
the cells have this distorted shape, they can't travel through the blood
vessels easily and get clogged in the narrow passages.
 |
BACK |
 |