Negative selection

Negative selection may refer to:
 * In biology:


 * Negative selection (natural selection), in natural selection it refers to the selective removal of rare alleles that are deleterious
 * Negative selection (artificial selection), in artificial selection it refers to where negative, rather than positive, traits of a species are selected for
 * In politics:


 * Negative selection (politics), is a process that occurs in rigid hierarchies, most notably dictatorships
 * In immunology:


 * Negative selection (immunology) T-cells that recognize self MHC molecules (and peptides) with high affinity are deleted from the repertoire of cells. Central tolerance is produced. Avoids auto-immunity. Occurs after positive selection.

Selezione negativa