Down’s syndrome is caused by an extra chromosome 21.
FOTOLIA
DNA
Genome
Your organisation does not have access to this article.
Sign up today to give your students the edge they need to achieve their best grades with subject expertise
SubscribeDeciphering the human genome
Molecular techniques in diagnostic genetics
Our genes make us who we are. To pass our genetic information on to newly formed cells, our DNA sequence is copied each time a cell divides. Although this is an effective process, errors can occur and genetic abnormalities may result. Diagnostic genetics laboratories work to find abnormalities that cause genetic disease.
Related articles:
Young at heart
Biological Sciences Review
Phages as lifesavers
Biological Sciences Review
Autumn leaves
Biological Sciences Review
Natural selection
Biological Sciences Review