Youthmananswered grow question 2 years ago It's probably not a genetic traits but a worm that live in the leaves
Yes , IN the leaves
If you see that spots are like a tunnel? If yes, you will see a little bug at the end(or at beginning) of that tunnel. Simply crack it with you fingersi gently to not broke the leaves, but enough to kill the worm :) than spray something bio, like neem o some foliar spray to increase resistance :)