Crossword Genius

Heredity unit (4)

Ross

I believe the answer is:

gene

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">heredity unit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for gene that I've seen before include "- - Kelly, dancer" , "Bodily factor controlling heredity" , "___ Kelly, star of Singin' In The Rain, d. 1996" , "may be passed to child" , "Biological factor determining heredity" .)

I've seen this clue in The New York Times, The Star Tribune, the LA Times, the Penny Press, the USA Today, the King Feature Syndicate, The Sun, the Universal and The Wall Street Journal.
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