1. Traits Inventory
Mrs. Stewart
Biology

2. Traits Inventory Analysis
Write a research question
Does the dominant form occur more often within a population?
Is the dominant trait more commonly found in a population, on average?
Write a hypothesis

3. Conduct experiment and gather data
Fill out the traits inventory with your table group and then we will gather numbers as a class

4. Earlobe Attachment

5. Hitchhiker’s thumb

6. Tongue Rolling

7. Dimples

8. Right vs. Left Handed

9. Freckles

10. Naturally Curly Hair
Curly
Straight

11. Cleft Chin

12. Allergies

13. Widow’s Peak
Straight Hairline
Widow’s Peak

14. Crossing your hands. Which thumb is on top?

15. Red-Green Color Blindness

16. All Classes – Data Compilation sample size = 131 students
Trait
% yes
% no
Detached Earlobes 54 46
Hitchhiker’s Thumb 53 47
Tongue rolling 84 16
Dimples 44 56
Right handed 85 15
Freckles 45 55
Curly hair 38 62
Cleft chin 17 83
Allergies 71 29
Widow’s peak 28 72
Cross left thumb over right 66 34
Red/Green colorblind 5 95

17. Graph data
Create a bar graph to show the percentage of students in this class that have/do not have each trait

18. Analyze data Trait Dominant Form Detached Earlobes Dominant
Hitchhiker’s Thumb
Tongue rolling
Recessive
Dimples
Dominant – may fade
Right handed
Freckles
Curly hair
Cleft chin
Allergies
Widow’s peak
Cross left thumb over right
Not genetically controlled
Red/Green colorblind