Crossword Genius

Target of modern splicing (4)

Ross

I believe the answer is:

gene

(Other definitions for gene that I've seen before include "Part of chromosome" , "Bodily factor controlling heredity" , "Hereditary determinant" , "Hereditary unit on chromosome" , "and 16 Down: Rockabilly singer" .)

I've seen this clue in The New York Times.
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