Etymology
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gene (n.)

1911, from German Gen, coined 1905 by Danish scientist Wilhelm Ludvig Johannsen (1857-1927), from Greek genea "generation, race" (from PIE root *gene- "give birth, beget"). De Vries had earlier called them pangenes. Gene pool is attested from 1946.

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*gene- 

*genə-, also *gen-, Proto-Indo-European root meaning "give birth, beget," with derivatives referring to procreation and familial and tribal groups.

It forms all or part of: Antigone; autogenous; benign; cognate; congener; congenial; congenital; connate; cosmogony; cryogenic; degenerate; engender; engine; epigone; eugenics; -gen; gendarme; gender; gene; genealogy; general; generate; generation; generic; generous; genesis; -genesis; genial; -genic; genital; genitive; genius; genocide; genotype; genre; gens; gent; genteel; gentile; gentle; gentry; genuine; genus; -geny; germ; german (adj.) "of the same parents or grandparents;" germane; germinal; germinate; germination; gingerly; gonad; gono-; gonorrhea; heterogeneous; homogeneous; homogenize; homogenous; impregnate; indigenous; ingenious; ingenuous; innate; jaunty; kermes; kin; kindergarten; kindred; king; kind (n.) "class, sort, variety;" kind (adj.) "friendly, deliberately doing good to others;" Kriss Kringle; malign; miscegenation; nada; naive; nascent; natal; Natalie; nation; native; nature; nee; neonate; Noel; oncogene; ontogeny; photogenic; phylogeny; pregnant (adj.1) "with child;" primogenitor; primogeniture; progenitor; progeny; puisne; puny; renaissance; theogony; wunderkind.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit janati "begets, bears," janah "offspring, child, person," janman- "birth, origin," jatah "born;" Avestan zizanenti "they bear;" Greek gignesthai "to become, happen," genos "race, kind," gonos "birth, offspring, stock;" Latin gignere "to beget," gnasci "to be born," genus (genitive generis) "race, stock, kind; family, birth, descent, origin," genius "procreative divinity, inborn tutelary spirit, innate quality," ingenium "inborn character," possibly germen "shoot, bud, embryo, germ;" Lithuanian gentis "kinsmen;" Gothic kuni "race;" Old English cennan "beget, create," gecynd "kind, nature, race;" Old High German kind "child;" Old Irish ro-genar "I was born;" Welsh geni "to be born;" Armenian cnanim "I bear, I am born."

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intra-genic (adj.)
also intragenic, "occurring within a gene," 1937, from intra- "within" + gene + -ic.
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gono- 
before vowels gon-, word-forming element from Greek gonos "seed, that which engenders," from PIE *gon-o-, suffixed form of root *gene- "give birth, beget."
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-genesis 

word-forming element meaning "birth, origin, creation," from Greek genesis "origin, creation, generation," from gignesthai "to be born," related to genos "race, birth, descent" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups).

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neonate (n.)

"recently born infant," 1905, coined from neo- "new" + Latin natus "born," past participle of nasci "be born" (Old Latin gnasci), from PIE root *gene- "give birth, beget."

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genotype (n.)
"genetic constitution of an individual," 1910, from German Genotypus (Wilhelm Johannsen, 1909); see gene + type (n.). Earlier the same word was used with a sense of "type-species of a genus" (1897); in this case, the first element is from genus.
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cryogenic (adj.)

"of or involving very low temperatures," 1896, from cryo- "freezing" + -genic "having to do with production" (from PIE root *gene- "give birth, beget"). Cryogen "freezing mixture, that which produces cold" is attested from 1875. Related: Cryogenics (1958).

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genome (n.)
"sum total of genes in a set," 1930, genom, modeled on German genom, coined 1920 by German botanist Hans Winkler, from gen "gene" (see gene) + (chromos)om "chromosome" (see chromosome).
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monogony (n.)

"asexual reproduction, reproduction by fission or gemmation," 1869, from Greek monos "single, alone" (see mono-) + -gonia "a begetting," from gonos "birth" (from PIE root *gene- "give birth, beget"). 

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