Name:
_ ___________________________________
Period:
_ ______
Date:
_ ___________________________
Name:
_ ___________________________________
Mendelian
T raits
L ab
-‐
O bserving
H uman
T raits
______
/
3 0
Purpose:
H ow
m uch
d o
t raits
v ary
i n
y our
c lassroom?
Background:
T raits
a re
p hysical
c haracteristics
y ou
i nherit
f rom
y our
p arents.
I n
t his
i nvestigation,
y ou
will
t ake
a n
i nventory
o f
y our
o bservable
t raits
a nd
c ompare
t hese
t o
t he
o bservable
t raits
o f
y our
classmates.
Y ou
w ill
t hen
t ake
i nventory
o f
s tudents
a nd
t eachers
i n
y our
s chool.
F inally,
y ou
w ill
determine
t he
f requency
o f
e ach
t rait
i n
y our
s chool’s
p opulation.
Procedures:
Observing
y our
o wn
t raits
• The
g raphic
b elow
s hows
s even
d ifferent
h uman
t raits.
E ach
t rait
h as
t wo
d ifferent
f orms.
S tudy
the
c hart
b elow,
t hen
f ollow
t he
p rocedures
c arefully.
1.
W orking
w ith
a
p artner,
o bserve
w hich
f orm
y ou
h ave
f or
t rait
A
t hrough
F .
C ircle
y our
f orm
o f
e ach
trait
i n
T able
1 .
N OTE:
F or
f inger
h air,
e ven
i f
y ou
h ave
o nly
o ne
h air
o n
a ny
o f
y our
m id-‐digits,
y ou
h ave
finger
h air.