Title: Genetic Diseases - body, causes, What Is Heredity?
Headings: Genetic Diseases
Genetic Diseases
KEYWORDS
What Is Heredity?
What Causes Genetic Diseases?
How Are Diseases Inherited?
The beginning of modern genetics
Dominant and recessive genes
Autosomal and sex-linked traits
A Genetic Glossary
What Are the Common Inheritance Patterns of Genetic Diseases?
Single-gene autosomal diseases
Single-gene sex-linked diseases
Multiple-gene diseases
Chromosome disorders
Spontaneous (new) genetic mutations
The Past and Future of Genetic Diseases
Gene therapy
Prenatal testing
Inheritance Patterns of Some Genetic Diseases
Genetic testing and counseling
Ethical
Resources
Books
Punnett Squares
Organizations
User Contributions:

Content: It is possible for the gene to change by itself in the affected person. This change is called a mutation. Unaffected children of a parent with the disorder have unaffected  children and grandchildren. * carrier is a person who has one copy of the defective gene for a recessive  disorder. Carriers are not affected by the disorder, but they can pass  on the defective gene to their children. In an autosomal recessive disorder: If two people without the disorder have a child with the disorder, both  parents carry one copy of the abnormal gene. If a person with the disorder and a carrier * have a child, there is a fifty-fifty chance that the child will have  the disorder. Any child without the disorder will be a carrier. If a person with the disorder and a noncarrier have children, all of the  children will be carriers but will not have the disorder.