Crossword Genius

Heredity units (5)

Ross

I believe the answer is:

genes

'heredity units' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for genes that I've seen before include "Units of heredity" , "Factors governing heredity, carried by chromosome" , "Biological factors controlling heredity" , "Units of DNA" .)

I've seen this clue in the LA Times.
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