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."
"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.