In a manner relating to gametes; concerning the characteristics or behavior of reproductive cells.
From 'gametic' (relating to gametes) plus the adverbial suffix '-ly' (Old English '-lice'), creating an adverb form for describing how something relates to gametes.
This word is rarely used outside scientific papers, but when geneticists say organisms are 'gametically isolated,' they're describing a fascinating reproductive barrier that prevents different species from interbreeding.
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