Crossword Genius

Hereditary units (5)

Ross

I believe the answer is:

genes

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hereditary units</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 genes that I've seen before include "Factors governing heredity, carried by chromosome" , "Units of DNA" , "Biological factors controlling heredity" , "Units of heredity" .)

I've seen this clue in the Evening Standard and the USA Today.
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