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Which is the result of breeding individuals of different parentage?
genetic disease
hybrid vigor
genetic engineering
natural selection

Sagot :

lrathburn
The result of breeding individuals of different parentage is hybrid vigor. Hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring. The adjective derived from heterosis is heterotic. An offspring exhibits heterosis if its traits are enhanced as a result of mixing the genetic contributions of its parents.
Oseni

Answer:

Hybrid vigor

Explanation:

One of the desirable results of breeding individuals of different parentage is hybrid vigor, otherwise known as heterosis or inbreeding enhancement. It is simply the desirable quantitative, physiological and or biological improvements that manifest in hybrids. By definition, hybrids refer to progenies of genetically different parents.

Hybrid vigor is in direct contrast with inbreeding depression - the enhancement of potentially fatal traits that usually occur in progenies of inbreeding. Inbreeding in itself is the mating between genetically close individuals.

There are two hypotheses that have been formulated to support the fact that hybrids exhibit improved traits compared to their parents;

  • Dominance hypothesis which postulated that dominant alleles from one parent masks the effects of bad recessive alleles from the other parent resulting in a more health and vibrant offspring.
  • Overdominance hypothesis postulated that offsprings from inbreeding have a higher percentage of harmful alleles compared to their parents. This results in less healthy offsprings.

Hence, the correct answer is hybrid vigor

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