Bit of inheritance (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bit of inheritance</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for gene that I've seen before include "___ Kelly, star of Singin' In The Rain, d. 1996" , "Something got from parent < for boy" , "The Selfish -- (Dawkins)" , "Part of DNA" , "What makes us different" .)