1. Investigating Human Traits
Genetics
Investigating Human Traits

2. Investigating Human Traits 2/6/15
Key Question: What do we inherit from our parents? Initial Thoughts:

3. Characteristic vs. Trait
Characteristic - i.e. Eye Color
Trait - different versions of a characteristic; i.e. brown, blue, green
How much variation is shown in our class?

4. Evidence: Trait Survey
Tongue rolling
Dimples
Paper tasting (PTC)
Nose shape
Widow’s peak
Mid-digit finger hair
Attached earlobes
Dark/blonde hair
Curly/ Straight Hair
Non-red/red hair
Freckles
Handedness
Cleft chin
Eye color
Straight/ Bent little fingers

5. Trait Table Traits: Tongue Rolling

6. Trait Table Traits: Widow’s Peak
No peak!

7. Trait Table Traits: Not Attached vs. Attached Earlobes

8. Trait Table Traits: Freckles on Face

9. Taste Test http://learn.genetics.utah.edu/content/inheritance/ptc/
PTC – No taste, bitter, extremely bitter
Sodium Benzoate – no taste, salty, bitter, sweet

10. Trait Survey
You and your elbow partner will fill-out the hereditary traits results.

11. Human Traits
Number of People
Traits

12. Analysis Questions What is the conclusion of your graph?
What would happen if you were able to ask more people?
List your individual traits.

13. Summary
What did you think about the variation of human traits before this lesson?
What does your evidence show you that you learned about the variation of human traits?
What are some thoughts or questions you have about human traits?

14. Reflection
Create an analogy for characteristics and traits.

15. Big Idea
We inherit genes from our parents which result in us having different traits.