Observing The Cell Cycle Biology Worksheet Page 12

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1
Table 1: Inventory of traits
Trait
Form 1
Form 2
A. Earlobe
Free
Attached
B. Dimples
Absent
Present
C. Chin
Cleft
No cleft
D. Hairline
Widow’s peak
Straight
E. Finger hair
Present
Absent
F. Thumb
Straight thumb
Hitchhiker’s thumb
G. PTC tasting
Can taste
Cannot taste
B
Stop and think
a. For earlobes only, how many students in your class do you think will share the same form
(free or attached) as you? Explain your reasoning.
b. Do you think any of your classmates will have the same form of all traits as you? Make a
prediction about how many of your classmates will have the same form of all seven traits
as you.
2

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