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

/in·breed·ing/ (-brēd-ing) the mating of closely related individuals or of individuals having closely similar genetic constitutions.

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.

inbreeding

[in′brēding]
Etymology: L, in, within; AS, bredan, to reproduce
the production of offspring by the mating of closely related organisms, the most extreme form being self-fertilization, which occurs in certain plants and animals. Inbreeding increases the chance that recessive alleles for both desirable and undesirable traits will become homozygous and be expressed phenotypically. In humans the amount of inbreeding in a specific population is largely controlled by tradition and cultural practices. Inbreeding is a standard agricultural method for developing desirable genotypes and pure lines in plants and animals. Compare outbreeding.

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.

inbreeding,

n the production of offspring by the mating of closely related individuals, organisms, or plants; self-fertilization is the most extreme form, which normally occurs in certain plants and lower animals. The practice provides a greater chance for recessive genes for both desirable and undesirable traits to become homozygous and to be expressed phenotypically.

inbreeding

the mating of closely related organisms or of organisms having closely similar genetic constitutions.

inbreeding coefficient
the probability that the two genes present at a locus in that individual are identical by descent.
inbreeding depression
depression of performance caused by inbreeding.
References in periodicals archive ?
Inbreeding coefficient and the coancestory coefficient were estimated by the algorithms proposed by Meuwissen and Luo (1992) and Malecot (1948), respectively.
If small hunter6gatherer bands were mixing at random, we would see much greater evidence of inbreeding than we have here," senior author Eske Willerslev said in the statement.
The significant effects of the interaction between inbreeding depression (ID) and genotype on YU, YC, GM, LE and DE showed that ID intensity differed among the genotypes.
Inbreeding is defined as the probability of two alleles within an individual being identical by descent (Curie-Cohen, 1981).
The inbreeding coefficient is the probability that two homologous genes are identical by ancestry at any locus of an individual 'I' '[19]:
Nevertheless, the numbers of white tigers have been boosted via intense inbreeding over several generations.
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.
Inbreeding coefficients were calculated for all breeding animals of six herds according to Quass (1976) using computer software WOMBAT (Mayer, 2010) considering all known relationships.
Inbreeding avoidance (inhibition of libido toward close kin) is an epigenetic adaptation that prevents excessive genetic harms from inbreeding.
Dead snakes are also being analysed in the laboratories at the university, checking for markers which suggest inbreeding has taken place.