page_title: Inbreeding
section_title: Semi-domestic animals
hierarchical_section_title: Inbreeding / Animals / Semi-domestic animals
caption_attribution_description: 日本語: ホワイトタイガー、群馬サファリパーク、群馬県富岡市。 English: White tiger. Gunma Safari Park. Tomioka-city, Gunma-pref, Japan.
context_page_description: Inbreeding is the production of offspring from the mating or breeding of individuals or organisms that are closely related genetically. By analogy, the term is used in human reproduction, but more commonly refers to the genetic disorders and other consequences that may arise from expression of deleterious or recessive traits resulting from incestuous sexual relationships and consanguinity.
  Inbreeding results in homozygosity, which can increase the chances of offspring being affected by deleterious or recessive traits. This usually leads to at least temporarily decreased biological fitness of a population, which is its ability to survive and reproduce. An individual who inherits such deleterious traits is colloquially referred to as inbred. The avoidance of expression of such deleterious recessive alleles caused by inbreeding, via inbreeding avoidance mechanisms, is the main selective reason for outcrossing. Crossbreeding between populations also often has positive effects on fitness-related traits, but also sometimes leads to negative effects known as outbreeding depression.
caption: White tiger in Gunma Safari Park
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