Gene itself is a nickname.
Famous people named Gene:
Actors Gene Kelly, Gene Wilder, and Gene Hackman; screenwriter Gene Roddenberry.
The main character in The Emoji Movie is named Gene, so never introduce it to your little Gene unless you're cool with watching it on loop.
Simple One-Syllable Boy Names, 100+ Bite-Sized One Syllable Middle Names For Your Cool Baby Boy, Fab Four-Letter Names For Boys, Glorious G Names For Baby Boys, Eureka! Science-Inspired Baby Names, Yee-Haw! Boy Names That Are A Little Bit Country, Wonderful Word Names Straight From The Dictionary, Boy Names People Won’t Shorten, Glamorous Names Inspired By Old Hollywood, Short, Sweet Baby Boy Names,