noun
Technical term in genetics and breeding. Refers to reduced biological fitness in a population due to inbreeding.
近交弱勢は、近親交配によって集団の適応度が低下する現象です。
Inbreeding depression is a phenomenon where the fitness of a population declines due to inbreeding.
Compound of 近交 (きんこう, 'inbreeding') and 弱勢 (じゃくせい, 'weakening' or 'depression'). The exact derivation is uncertain; the term is a modern technical coinage.