This document is a survey from researchers studying the inheritance of tongue rolling abilities. It requests the participant's name, sex, city, and whether they or any family members can roll their tongue. It also asks if the participant has a sibling enrolled at the University of the Philippines Diliman and collects information on whether immediate and extended family members can roll their tongue or not. The survey aims to keep responses confidential and thanks participants for their contribution.

1. Good day! We are researchers from the Institute of Biology, UP Diliman and we are studying the mode of inheritance of tongue-
rolling. We would like to ask a few questions regarding the said topic. Rest assured that the information you will provide below will
be treated as confidential,
Name (required): _ can can't
Sex: OM OF roll tongue roll tongue
City Address: -r-r- _ .~ /~'"
Do you have a sibling who is currently enrolled in any Biology class in UP Diliman 7 If yes,
please write his/her name. ---' _
CAN YOU ROLLYOUR TONGUE? Please see illustration.
OY ON
Can the following people also roll their tongue? Please include only biological members of the family. Please put "N/A" if information.
is not available (i.e. if family member is deceased, not in the country, etc).
Immediate family Yes/No Extended family Yes/No
Father Paternal Grandfather
Mother Paternal Grandmother
Siblings (indicate sex): Maternal Grandfather
Maternal Grandmother
Father's siblings
(Indicate sex)
Mother's siblings
(Indicate sex)
..
Thank you for your participation! ©