Slide show: How genetic disorders are inherited
Your genes, chromosomes and DNA
Your body is made up of trillions of cells. Each cell has a core structure (nucleus) that contains your chromosomes.
Each chromosome is made up of tightly coiled strands of deoxyribonucleic acid (DNA). Genes are segments of DNA that determine specific traits, such as eye or hair color. You have more than 20,000 genes.
A gene mutation is an alteration in your DNA. It can be inherited or acquired during your lifetime, as cells age or are exposed to certain chemicals. Some changes in your genes result in genetic disorders.
Slide show: How genetic disorders are inherited
, Test or procedure, Genetics/Birth defects, Genetic tests
May 09, 2009
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