Post on 14-Dec-2015
Do you have these Traits?
• Attached Earlobes• Tongue Rolling• Dimples• Right-Handed• Freckles• Straight Hair• Cleft Chin• Allergies• Hitchhikers Thumb• Widow’s Peak
Problem• Are dominant traits or recessive traits
more common?
Hypothesis• If people are surveyed about their traits, then we will learn…
– Dominant traits are more common– More people have traits that are recessive– Etc.
Inventory of My Traits Lab
Method
1. Take Survey.
2. Graph the class results of the survey.
3. Graph the percent of people in the general population with the trait.
DataTrait My
Answer
Class
YesClass
No
Attached Earlobes
Tongue Rolling
Dimples
Right-Handed
Freckles
Straight Hair
Cleft Chin
Allergies
Hitchhikers Thumb
Widow’s peak
Class Graph
Atta
ched
E
arlo
bes
To
ngu
e Ro
lling
Dim
ples
Rig
ht Ha
nde
d
Fre
ckles
Straig
ht Ha
ir
Cle
ft Ch
in
Alle
rgie
s
Hitch
hike
r’s T
hum
b
Wido
w’s P
eak
Nu
mb
er of S
tud
ents in
Cla
ss w
ith Tra
it
General Population Graph
To
ngu
e Ro
lling
70
%
Rig
ht Ha
nde
d 9
3%
Hitch
hike
r’s T
hum
b 25
%
Pe
rcen
t of P
eo
ple in
Gen
era
l P
opu
lation w
ith T
rait
Dominant or RecessiveTrait (Phenotype) Dominant or
RecessivePossible Genotype
Attached Earlobes
Tongue Rolling
Dimples
Right-Handed
Freckles
Straight Hair
Cleft Chin
Allergies
Hitchhikers Thumb
Widow’s peak
Recessive
Recessive
Recessive
Dominant
Dominant
DominantDominant
Dominant
Dominant
Recessive