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Dominant and Recessive Traits

Dominant and Recessive Traits. What are traits?. Physical Traits Can be seen by others Eye color, hair color, height, left handed Acquired Traits Learned skills Playing a sport, riding a bike, playing a musical instrument Behavioral Traits Instinctual actions Nest building and migration.

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Dominant and Recessive Traits

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  1. Dominant and Recessive Traits

  2. What are traits? • Physical Traits • Can be seen by others • Eye color, hair color, height, left handed • Acquired Traits • Learned skills • Playing a sport, riding a bike, playing a musical instrument • Behavioral Traits • Instinctual actions • Nest building and migration

  3. What traits do you have? • We will go through the most common traits that people have • On your sheet, record if you have the mentioned trait or not • You may have to ask your neighbor for help 

  4. Detached (EE, Ee) or attached (ee) Earlobes

  5. Can Tongue Roll (TT, Tt) or Can’t (tt)

  6. Dimples (DD, Dd) No Dimples (dd)

  7. Right (RR, Rr) or Left (rr) handed?

  8. Freckles (FF, Ff) No Freckles (ff)

  9. Curly (HH, Hh) or Straight (hh)

  10. Cleft Chin (CC, Cc) or No Cleft (cc)

  11. Allergies (AA, Aa) or No Allergies (aa)

  12. Hand Clasp Right over Left?

  13. Normal (BB, Bb) Color Blindness (bb) Can you see the number inside the circle? If you cannot, you may be colorblind

  14. Widow’s Peak (WW, Ww) or Straight (ww)

  15. Data • We will now record our class data and graph our results.

  16. How do you compare? • Compare your data to that of the general population. • Which frequency was the most surprising to you? • What about the whole 5th grade? • Example: # of students with the trait/# of students in the class x 100 = _____% 12/24 x 100 = 50%

  17. Ticket out the door… • Do you think that more common traits are “better” than less common traits? Why or why not?

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