Hybridisation (biology)

offspring of cross-species reproduction

controversial term for uncontrolled dispersal of contaminated altered genes from genetically engineered organisms to natural organisms

observation in evolutionary biology

process where the limited gene pool of an endangered species diminishes even more when reproductive individuals die off before reproducing with others in their endangered low population

thumb|right|Klepton genetic inheritance in frogs In biology, a klepton (abbreviated kl.) and synklepton (abbreviated sk.) is a species that requires input from another biological taxon (normally from a species which is closely related to the kleptonic species) to complete its reproductive cycle. Specific types of kleptons are zygokleptons, which reproduce by zygogenesis; gynokleptons which reproduce by gynogenesis, and tychokleptons, which reproduce by a combination of both systems.

In zoology, intergradation is the way in which two distinct subspecies are connected via areas where populations are found that have the characteristics of both. There are two types of intergradation: primary and secondary.

produced by cross-pollinated plants

population of hybrids beyond first hybrid generation

upright=0.80|right|thumb|The tassel of a corn plantDetasseling corn is removing the pollen-producing flowers, the tassel, from the tops of corn (maize) plants and placing them on the ground. It is a form of pollination control, employed to cross-breed, or hybridize, two varieties of corn.