Determine the frequency of the recessive trait (q2).  To do this, divide the number of people with attached earlobe by the total number of people you counted.

Population Genetics Indoor Experiment:
Experiment Instructions

MATERIALS NEEDED
Notepad
Experiment Tracking Sheet: Earlobe Experiment Tracking Sheet.docx Calculator .

Determine Baseline p and q
⦁ Choose a source that contains lots of images or photos of DIFFERENT people such as Facebook, a televised concert or video recorded sporting event.
⦁ Identify the earlobe trait on at least 50 different people.  Record how many had detached trait and how many had attached trait.
⦁ Determine the frequency of the recessive trait (q2).  To do this, divide the number of
people with attached earlobe by the total number of people you counted.
⦁ Determine the frequency of the recessive allele (q).  To do this, take the square root of the frequency you calculated in #3.
⦁ Determine the frequency of the dominant allele (p).  This is equal to 1 – q.