Brad and Jenna are competitive siblings. The eldest, Brad, has bright blue eyes, a charming personality, and tremendous athletic abilities. Aside from their skin Brad and Jenna are complete opposites. Jenna has a more reversed personality and is not a fan of sports and different ail colors. which of the traits in an example ofc a genentic variation. A brad is older than jenna B brad has blue and Jenna has hazel eyes C brad enjoys sports and jenna enjoys science D brad is outgoing and jenna is reserverd