PIE base ‘to give birth, bear, beget, produce, generate’, with derivatives referring to aspects and results of procreation and to familial and tribal groups.
Other derivatives include morphogenesis, hylogenesis, bioogenesis, noogenesis, kin, king, jaunty, pregnant, and gingerly.
[Pokorny *ĝen-1, ĝenǝ-, ĝnē-, ĝnō- 373–375. These root forms are the same as for gnō-, root of know, cognitive, noble, etc.]