Tuesday, April 03, 2007

About Genetic Testing

  • Genetic tests are used to look for faulty alleles in our genes, that cause genetic disorders.

  • If you are having a child and you know of a genetic disorder rund in the family, you can have one of these test to see if you child wiil have that inherited disorder.

Chromosomes



  • Chromosomes are made of a chemical called DNA. Most kinds of living organisms use DNA to make their chromosomes.



  • A fertilized egg cell contains the instructions for making proteins in a human.



  • Proteins are important chemicals for cells, there are many different types of proteins in our bodies.



  • Enzymes~ build the body.



  • Structural proteins~ speed up chemical reactions in the body.

About DNA



DNA is short for deoxyribonucleic acid.

  • We have inherited genetic information from our parents.

  • We have some features in common, the diferences may only be small but we are interested in them because they make us unique.

  • Most of your genes are effected by the genes that you inheried from your parents, however, your environment can also effect how you develop. I.e. if you spend more time in the sun, the darker you skin will get.

  • Genetic Testing is use to look for faulty alleles in our genes.
    You can have a genetic test if you know a genetic disorder runs in the family.
    There have been small studies into what woul be the out come, if we tested the whole population for the same faulty gene or allele.