6 letters · 6 points in Scrabble
noun (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character
originBorrowed from German Allel, shortened from Allelomorph, from English allelomorph. Ultimately from the Ancient Greek ἀλλήλων (allḗlōn, “each other”) from ἄλλος (állos, “other”).
Etymology from Wiktionary, CC BY-SA 3.0