Clonal

Clonal may refer to:

Biology

 * Clonal interference, a phenomenon that occurs when two (or more) beneficial mutations arise independently in different individuals in a genetically homogeneous population of an asexually reproducing organism
 * Aggregating anemone, also called clonal anemone
 * Vegetative cloning, a form of asexual reproduction in plants
 * Clonal reproduction

Immunology

 * Clonal deletion, a process by which B cells and T cells are deactivated before act significantly upon specific antigens
 * Clonal selection theory, a model for how the immune system responds to infection
 * Clonal anergy, a lack of reaction by the body's defense mechanisms to foreign substance