Conversion of non-fissionable into fissionable material, e.g. uranium-238 into plutonium-239 or thorium-232 into uranium-233. Neutron radiation in a reactor produces uranium-239 from uranium-238 by ne [..]

late 14c., "hatching, incubation;" also "formation, development, growth," verbal noun from breed (v.). Meaning "good manners" is from 1590s.

producing offspring or set aside especially for producing offspring; "the breeding population"; "retained a few bulls for breeding purposes" eleganc [..]

Human controlled reproduction of animals by keeping together pubescent animals of different sex, directed mating or the adduction of a specific animal to be covered or through use of other techniques of reproduction”. 

A group of organisms having common ancestors and certain distinguishable characteristics, especially a group within a species developed by artificial selection and maintained by controlled propagation.

The human-facilitated mating of plants or animals with the objective of genetic improvement through selection.

(n) elegance by virtue of fineness of manner and expression(n) the result of good upbringing (especially knowledge of correct social behavior)(n) helping someone grow up to be an accepted member of th [..]

The production of offspring by selective mating or Hybridization, Genetic in Animals or Plants.

The use of DNA Recombination (Recombination, Genetic) to prepare a large Gene Library of novel, chimeric Genes from a Population of randomly fragmented DNA from related Gene sequences.

The production of offspring by selective mating or HYBRIDIZATION, GENETIC in animals or plants.

Sexual reproduction of animals, either spontaneously or planned and supervised by human beings.

the action or process of bearing or generating organisms; in agriculture it usually designates deliberate manipulation of parents to obtain improved offspring

A group of organisms having common ancestors and certain distinguishable characteristics, especially a group within a species developed by artificial selection and maintained by controlled propagation.

The science and art of changing the genetic constitution of a population of plants or animals.