Genetic testing

7 important questions on Genetic testing

What is being carrier of the gene?

When the gene for a genetic diseasse is discovered in an indicidual it is possible that this person does not have the diease themselves. However, they canpass it on to their children.

What happens if their partner is also carrier?

then there is a chance that one or more of their children will get this desease

What is Genetic counselling?

Genetic counselling: a genetic counsellor calculates the chances of having a child that is born with an inherited genetic disease.
– After this the man and woman can decide about a possible pregnancy.
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Genetic counselling is advisable for people who belong to the risk group, give examples:

• Genetic counselling is advisable for people who belong to a risk group. Examples are when:
– a genetic disease runs in the family;
– a woman has had several miscarriages

What are ways of prenetal diagnosis?

Prenatal diagnosis: before birth a child is tested for diseases or handicaps.
– Ultrasound scan: the embryo is made visible on a screen using sound waves.
– Chorionic villus sampling: a small sample of tissue is taken from the placenta. The chromosomes of these foetal cells are tested.
– Amniocentesis: some amniotic fluid containing cells of the foetus is taken out of the uterus. The chromosomes of the foetus are then tested.

Why are emoving cells with chorionic cillus sampling or amniocentesis not without risk?

Such tests carry a higher risk of miscarrriaes. Therefore such tests are lonly carried out when the risks are high of having a baby with serious diseasesor abnormailities.

What can parents do when unborn child has a serious disease or abnormlity?

Together with the help of a doctor or other health workers the parents can decide to have an abortion

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