BIOSPHERE Main Menu

Heredity - Pleiotropy

Pleiotropy

Pleiotropy occurs when a gene has more than one phenotypic expression. For example, in sickle cell anemia the gene that codes for hemoglobin is defective. Not only is the body unable to produce hemoglobin, but the shape of the red blood cells are affected as well.



Back to Epistasis Top of the Page To Polygenic Inheritance

Biosphere logo and navigation buttons © 1999 Electric Rodent Web Design. All Rights Reserved. Advanced Placement Program is a registered trademark of the College Entrance Examination Board. AP is a trademark owned by the College Entrance Examination Board. No endorsement of any product is given.