1831, "pertaining to origins," coined by Carlyle as if from Greek genetikos from genesis "origin" (see genesis). Darwin used it biologically as "resulting from common origin" (1859); modern sense of "pertaining to genetics or genes" is from 1908 (see gene). Related: Genetically. Genetical is attested from 1650s as "pertaining to origins."[genetic etymology, genetic origin, 英语词源]
"The occurrence of an immunoglobulin or other protein in genetically determined, antigenically distinct forms in different members of the same species", 1950s; earliest use found in Science. From French allotypie from allo- + type + -ie.
"The process of genetically modifying plants and animals so that they produce substances which may be used as pharmaceuticals", 1990s: sense 1 punningly after farming; sense 2 patterned on phishing.
"The evolution of one or more new species from an ancestral species that becomes split into geographically separate populations which diverge genetically over a period of time", 1940s; earliest use found in American Naturalist.