Dictionary > Heterosis

Heterosis

Definition
noun, plural: heteroses
A tendency of an organism to have superior qualities over those of the parents in relation to size, growth rate, yield, fertility and fecundity
Supplement
The physiological vitality of an organism is evident in its speediness of growth, its height and general strength that is certainly allied with the amount of difference in the gametes by whose unification of the organism was formed.
Plant and animal breeders always develop heterosis by mating two different purebred lines that have advantageous traits. In the first age group progeny normally demonstrate a better measure compare to the preferred characteristics of both parents. This vigour might decline if the hybrids are mated together thus, parental lines must be uphold and crossed for every new desired organisms.
Heterosis refers to the event that offspring of assorted varieties of a species reveals better biomass, speed of development, and fertility than both parents. Some models have been situated to explain heterosis, including dominance, overdominance, and pseudo-overdominance. The more copious the disparity between the uniting gametes within definite restrictions, the better of the whole is the quantity of motivation.
Word Origin: heteros (“alter”, “different”)
See also:

Compare:

  • inbreeding depression
  • Related terms:

    • heterotic (adjective, of, relating to, or pertaining to heterosis)


    You will also like...

    Ecological Research Measuring & Analysis
    Ecological Research: Measuring & Analysis

    This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..

    Chemical effects on plant growth and development
    Effect of Chemicals on Growth & Development in Organisms

    Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

    Neurology of Illusions
    Neurology of Illusions

    Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..

    mRNA
    Protein Synthesis

    Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..

    Genetics and Evolution
    Genetics and Evolution

    Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

    Lake Wakatipu, New Zealand
    New Zealand’s Unique Geographical History

    Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..

    Related Articles...

    No related articles found

    See all Related Topics