Genetic Disorders

twoeggfinnishBiotechnology

Dec 14, 2012 (4 years and 10 months ago)

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Genetic Disorders


Diseases

What is a Genetic Disorder or Disease?


A genetic disorder is an abnormal condition
that a person inherits through genes or
chromosomes.



They are caused by mutations or changes in a
person’s DNA.

Cystic Fibrosis



Cystic fibrosis is a genetic disorder in which
the body produces thick mucus in the lungs
and intestines.


The mutation that leads to cystic fibrosis is
carried on a recessive allele.


There is currently no cure for cystic fibrosis.

Sickle
-
Cell Disease



Sickle
-
cell disease is a genetic disorder that
affects the blood.


Red blood cells will have an unusual sickle
shape.


People will experience pain and weakness.


There is no cure for sickle
-
cell disease.

Hemophilia



Hemophilia is a genetic disorder in which a
person’s blood clots very slowly or not at all.


A person with hemophilia can bleed to death
from a small cut or scrape.


It is caused by a recessive allele on the X
chromosome.


People with hemophilia are advised to avoid
contact sports because of internal bleeding.

Diagnosing Genetic disorders



Today doctors use tools such as amniocentesis
and karyotypes to help detect genetic
disorders.


Amniocentesis


a doctor uses a needle to
remove fluid surrounding a baby.


Karyotypes


a picture of all the chromosomes
in a cell.

Gene Therapy


Researchers using genetic engineering will try
to correct some genetic disorders.


Researchers will insert working copies of a
gene directly into the cells of a person with a
genetic disorder.


Gene therapy is still experimental and
researchers are working to improve this
technique.