DNA quiz online with questions and answers. Review 4th, 5th, 6th grade biology skills with a DNA multiple choice quiz. In this quiz students will learn what the DNA is, how is combines, how it influences hereditery and more. This quiz is a class 6 test preparation and features ten questions. This quiz is free and online meaning it can be taken several times. Teachers and parents can use this quiz to test or review with their students. After practicing online, students can get more offline practice with a printable worksheet with questions on DNA. Feel free to share this resource.