inbreeding


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inbreeding

 [in´brēd-ing]
the mating of closely related individuals or of individuals having closely similar genetic constitutions.

in·breed·ing

(in'brēd-ing),
1. Mating between organisms that are genetically more closely related than organisms selected at random from the population.
2. A practice of mating animals that are closely related.

inbreeding

(ĭn′brē′dĭng)
n.
1. The breeding or mating of closely related individuals.
2. The intentional breeding of closely related individuals so as to preserve desirable traits in a stock.

in·breed·ing

(in'brēd-ing)
1. Mating between organisms that are genetically more closely related than organisms selected at random from the population.
2. A practice of mating animals that are closely related.

inbreeding

Mating of the closely related. Inbreeding tends to promote similarities and to deny access to new genes. It increases the chances of offspring being HOMOZYGOUS for RECESSIVE genes and thus manifesting the effect but, in itself, has no inherent tendency to produce bad characteristics. Its reputation so to do arises from the observation of the undesirable effects of inbreeding in the genetically disfavoured.

inbreeding

any mating between relatives, which can lead to a general lowering of viability due to accumulation of deleterious genes, often in the HOMOZYGOUS state, passed on through both parents from a common ancestor. Compare OUTBREEDING.

in·breed·ing

(in'brēd-ing)
Mating between organisms that are genetically more closely related than organisms selected at random from the population.
References in periodicals archive ?
" We don't breed humans with leucoderma, do we?" The rigorous inbreeding employed ever since Mohan and Radha -- mating fathers with daughters and granddaughters -- has invited much criticism from tiger conservationists, who say the exercise is an economicsdriven charade to draw more people to zoos at the cost of the animals' health.
Stochastic computer simulation is often used to investigate the effect of selection strategies on genetic gain and inbreeding in aquaculture breeding programs (Hayes et al.
Unless the population of animals in the composite groups is very large, however, inbreeding will eventually reduce the effect of heterosis.
Out of total 7345 animals 766 (10.43%) were found inbred (756 females and 10 sires) with average inbreeding coefficient 5.33% whereas overall inbreeding coefficient was 0.56%.
Consanguineous marriages and endemic malaria: can inbreeding increase population fitness?
Probabilities of gene origin, previously utilized in wildlife populations [6], have been recently utilized for evaluating the genetic variation in domestic animals by considering detection of some significant changes in those animals before increasing inbreeding [10-15, 25].
Ambrosia beetles, however, clearly benefit from inbreeding. The tiny Asian insects, which invaded Europe beginning in the 1950s, colonize newly fallen trees in the early summer.
The kittens' health: "Immediately, all of the inbreeding problems disappeared," says Lotz.
Minimizing inbreeding and the loss of genetic variation are major concerns of captive breeding programs for endangered species.
Inbreeding in local host populations will be a common phenomenon in host-pathogen systems that are characterized by metapopulation dynamics, i.e., frequent extinction and recolonization of local host populations by small numbers of founding individuals.
Female parasitoids may adjust offspring sex ratio in response to environmental conditions, host quality, and inbreeding status (Godfray 1994).