Genetics

Placenta is a dumping ground for genetic defects

In the first study of the genomic architecture of the human placenta, scientists at the Wellcome Sanger Institute, the University of Cambridge and their collaborators have confirmed that the normal structure of the placenta ...

Medical research

How one patient's rare mutation helped solve a mycobacterial mystery

Just because you are exposed to a pathogen does not mean you will become sick. Increasingly, scientists have shown that genetics play a central role in determining whether the pathogens that cause a wide range of disease—including ...

Neuroscience

Disorders in movement

Spinocerebellar ataxias are diseases of the nervous system associated with a loss of motor coordination. A European research alliance headed by the German Center for Neurodegenerative Diseases (DZNE) and the University of ...

page 1 from 6

A genetic disorder is an illness caused by abnormalities in genes or chromosomes, especially a condition that is present from before birth. Most genetic disorders are quite rare and affect one person in every several thousands or millions.

A genetic disorder may or may not be a heritable disorder. Some genetic disorders are passed down from the parents' genes, but others are always or almost always caused by new mutations or changes to the DNA. In other cases, the same disease, such as some forms of cancer, may be caused by an inherited genetic condition in some people, by new mutations in other people, and by non-genetic causes in still other people.

Some types of recessive gene disorders confer an advantage in certain environments when only one copy of the gene is present.

This text uses material from Wikipedia licensed under CC BY-SA