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n. breeding within a narrow range of individuals vb. (present participle of interbreed English)

  1. n. (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids [syn: hybridization, hybridisation, crossbreeding, crossing, cross, hybridizing]

  2. reproduction by parents of different races (especially by white and non-white persons) [syn: miscegenation, crossbreeding]

Usage examples of "interbreeding".

Chapter VIII Hybridism Distinction between the sterility of first crosses and of hybrids -- Sterility various in degree, not universal, affected by close interbreeding, removed by domestication -- Laws governing the sterility of hybrids -- Sterility not a special endowment, but incidental on other differences -- Causes of the sterility of first crosses and of hybrids -- Parallelism between the effects of changed conditions of life and crossing -- Fertility of varieties when crossed and of their mongrel offspring not universal -- Hybrids and mongrels compared independently of their fertility -- Summary.

And thus, the strange fact of the increase of fertility in the successive generations of artificially fertilised hybrids may, I believe, be accounted for by close interbreeding having been avoided.

Horticulturists raise large beds of the same hybrids, and such alone are fairly treated, for by insect agency the several individuals of the same hybrid variety are allowed to freely cross with each other, and the injurious influence of close interbreeding is thus prevented.

I have collected so large a body of facts, showing that close interbreeding lessens fertility, and, on the other hand, that an occasional cross with a distinct individual or variety increases fertility, that I cannot doubt the correctness of this almost universal belief amongst breeders.

I spoke of interbreeding, I was only posing a notion, not giving an edict!

Sporadic instances of interbreeding took place between Witchbreed and Ortheans, but in general the two species are not inter-fertile.

During the conquest of Kehnooryos Ehlahs and in the ten years following, a certain amount of uncontrolled interbreeding had taken place as captured eastern animals were introduced into plains horse herds.

Then, thirty years of controlled interbreeding was instituted by Milo at a number of farms scattered about the Confederation.

The picture of this sealed palace, with its generations of super-brains locked away from the horrors of the world outside for a century, breeding and interbreeding, with slaves to work for them, chilled the blood of Ryan and his compatriots.

It follows from elementary genetics that in a freely mixing and interbreeding population, any new characteristic will tend to be diluted, and will disappear within relatively few generations.

Perhaps, she tried to assure herself, there were hounds from the destroyed manors and keeps they had seen, gone feral in a pack, interbreeding and managing to live off the land.

At any rate, the steps taken to preserve the colonists from interbreeding resulted in your society becoming ossified.

The Guajiros had continued in their barbaric isolation throughout the centuries, feared and loathed, the issue of indigenous Caribes interbreeding with Englishmen and escaped slaves, creating a race that good Colombians considered bestial and disgusting.

It is simply that, as a matter of fact, species obviously have diverged from one another in evolution, and at first sight the fact of interbreeding makes it hard for us to see how this divergence came about.

Unfortunately, both races have a horrendous taboo against interbreeding, and no Firvulag would touch a human with a barge pole.