Deacon Phillippe has fans asking if abs are genetic thanks to his striking resemblance to his dad, Ryan Phillippe. Deacon, 22, modeled shirtless in a new photo shoot for clothing brand ERL based in Venice Beach, California. Designer Eli Russell Linnetz posted the shots on Instagram, in which Deacon showed off his defined abs. The only son of Ryan and Reese Witherspoon also posed in purple jeans and a sleeveless tank top, with his hair brushed back. One shot included him rocking a matching purple hoodie, but ditching the shirt underneath. Deacon commented on the post, “Still in the purps btw they stayed on since.” The comments were…