Name: ______________________________________________ Date: ________________________________ Period: _________ Human Traits Survey Look around the classroom, is everyone in the class identical? Why not? These differences are often inherited from your parents. Survey your partner to learn about some human traits that are passed from generation to generation. Have your partner help you survey your traits. Then, you will go home and survey one family member. Mother Partner who helped you survey your traits: Father Grandmother Grandfather Attached Earlobes
Earlobe Attachment (If earlobes hang free, they are detached. If they attach directly to the side of the head, they are attached.) Tongue Rolling Detached Earlobes Can Roll Tongue
Cannot Roll Tongue (Some people can curl up the sides of their tongue to form a tube shape.) No Dimples Have Dimples Dimples (Dimples are small, natural indentations on the cheeks. They can appear on one or both sides.) Freckles (Freckles are small, concentrated spots of skin pigment called melanin. Most fair-­‐
skinned, red-­‐haired people have them.) Freckles No Freckles Widow’s Peak
Strait Hairline
Hairline Shape Mid-­‐digit hair Mid-­‐digit Hair No Mid-­‐digit hair (Do you have hair in the mid-­‐digits of your fingers?) Hand Clasping Cross Left Thumb Over Cross Right Thumb Over (Fold your hands together by interlocking your fingers without thinking about it. Which thumb is on top – your left or your right?) Right Left PTC Tasting Taste PTC Does Not Tastes PTC
(For some people the chemical PTC (phenylthiocarbamide) tastes very bitter. For others, it is tasteless.) Did you share ALL of your traits with your family member? Why do you think that is? _________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________