1. List whether the student was negative or positive for each characteristic and comprise whether the characteristic is dominant or recessive.
a. Blood type
b. Free ear lobes
c. Widow's peak
d. Tongue rolling
e. Left thumb dominance
f. Hitchhiker's thumb
g. Little finger bend
h. Mid-digit hair
i. PTC taster
j. Facial dimples
k. Cleft chin
l. Freckles
2. Can the student tell from blood type when the student is homozygous or heterozygous? Describe.