Investigating Human Traits

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Presentation transcript:

Investigating Human Traits Genetics Investigating Human Traits

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

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?

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

Trait Table Traits: Tongue Rolling http://www.ncrtec.org/tl/camp/gene/curl.jpg

Trait Table Traits: Widow’s Peak No peak! http://images.google.com/imgres?imgurl=student.biology.arizona.edu/sciconn/heredity/graphics/widow2.gif&imgrefurl=http://student.biology.arizona.edu/sciconn/heredity/worksheet_heredity.html&h=131&w=100&prev=/images%3Fq%3Dwidow%2527s%2Bpeak%26start%3D20%26svnum%3D10%26hl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26sa%3DN

Trait Table Traits: Not Attached vs. Attached Earlobes http://www.edquest.ca/Projects/GHTS/FET.jpg http://student.biology.arizona.edu/sciconn/heredity/graphics/nolobe.gif

Trait Table Traits: Freckles on Face http://www.szarvas.org/freckles.jpg

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

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

Human Traits Number of People Traits

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

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?

Reflection Create an analogy for characteristics and traits.

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