What traits do we inherit from our parents?

1. What traits do we inherit from our parents?

2. What does the word prevalent mean? Predictions?

3. Hitchhiker’s Thumb • Straight thumbs (dominant trait) can be seen as nearly a straight line and may contain a slight arch when viewed from the side as in the illustrations.  • Curved thumbs (recessive trait) can be seen as part of a circle.

4. Ear Lobes • Free earlobes(dominant trait) hang below the point of attachment to the head.  • Attached ear lobes(recessive trait) are attached directly to the side of the head.

5. Widow's Peak • Widow’s Peak (dominant trait) • Straight Hairline (recessive trait).

6. Roll Tongue • Rolled Tongue (dominant trait) • Cannot roll tongue (recessive trait).

7. Right Handed • Right handed (dominant trait) • Left Handed (recessive trait).

8. Mid Digital Hair • Mid digital hair (dominant trait) • Hairless (recessive trait).

9. Freckles • Freckles (dominant trait) • No Freckles (recessive trait).

10. Dimples • Dimples (dominant trait) • No Dimples (recessive trait).

11. Cleft Chin • Cleft Chin (dominant trait) • No Cleft (recessive trait).

12. Clasp hands left over right • Left over Right (dominant trait) • Right over left(recessive trait).

13. Six Fingers • Six Fingers (dominant trait) • 5 fingers (recessive trait).

14. Bent Pinkies • Bent pinky (dominant trait) • Straight pinky (recessive trait): • Hold your hands together as if you are covering your face. • If the tips of the pinkies (or baby fingers) point away from one another, the pinkies are bent(recessive trait).

15. Longer Big Toe • Longer Big toe (dominant trait) • Longer 2nd toe(recessive trait).

16. Taste PTC • Taste PTC (dominant trait) • Can’t Taste PTC (recessive trait).

17. Calculating Percent • Percent (%) = number of students with the trait / total number of students surveyed X 100. • For example: 15 students with the trait / 25 students surveyed X 100 = 60%

18. Sample Graph