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.
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