Genetic Disorders


14 déc. 2012 (il y a 8 années et 10 mois)

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Genetic Disorders


What is a Genetic Disorder or Disease?

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

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.

Cell Disease

cell disease is a genetic disorder that
affects the blood.

Red blood cells will have an unusual sickle

People will experience pain and weakness.

There is no cure for sickle
cell disease.


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

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


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


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