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...

    Endemic Flora of New Zealand
    New Zealand’s Unique Flora

    If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

    Cells in different stages of meiosis
    Meiosis – The Genetics of Reproduction

    Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..

    primitive arthropods
    Arthropods

    The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

    Carbohydrates, fats and proteins - dietary sources
    A Balanced Diet – Carbohydrates and Fat

    Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

    IQ, Creativity and Learning
    IQ, Creativity and Learning

    Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..

    temperature - abiotic factor
    Abiotic and Biotic Factors

    This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

    Related Articles...

    No related articles found

    See all Related Topics