Definition of heterosis in English:

heterosis

Line breaks: het¦er|osis
Pronunciation: /ˌhɛtəˈrəʊsɪs
 
/

noun

  • technical term for hybrid vigour.
    More example sentences
    • With overdominance, unlike alleles are postulated to result in a stimulating effect, so that genetic heterozygosity per se produces heterosis.
    • Genetic background, heterosis, and sex differences can all have profound effects on chiasma and recombination frequencies.
    • The fundamental genetic and physiological causes of heterosis remain poorly understood in plants after nearly a century of exploitation in crop improvement.

Origin

early 20th century: from Greek heterōsis 'alteration', from heteros 'other'.

More definitions of heterosis

Definition of heterosis in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day kerf
Pronunciation: kərf
noun
a slit made by cutting with a saw