We all know we are unique individuals but the important question is are you normal? For example if you’re right handed then the answer is yes you are in the 85 % of people who are that way. Even if your parents are both left-handed there is only a 25% chance that you will be the same. Asap SCIENCE looks at the science of some popular tendencies of human beings and whether that means they are within the norm or not. For example, the ability to roll you tongue or have red hair, wear glasses, and those who remove their wisdom tooth.