This document contains a list of human traits and whether they are dominant or recessive. Some of the traits listed include widow's peak, ear wax type, attached vs free earlobes, tongue rolling, finger interlocking, earlobe attachment, hitchhiker thumb, PTC tasting ability, cleft chin, Darwin's tubercle, ability to smell asparagus in urine, iris color, freckles, extra fingers/toes, dimples, hair texture, eyelash length, and relative toe lengths. For each trait, it specifies whether the phenotype is dominant or recessive.

1. Chapter 11 Genetics

3. (D)Widows Peak vs. Straight (r)

4. (D)Wet ear wax vs. Dry ear wax (r)

5. (D)Free Earlobe vs. Attached (r)

6. Six-digits (D)

7. Hitchhiker Thumb (recessive)

8. Cleft chin (recessive)

9. Dimples ( dominant)

10. Freckles (dominant)

11. Webbed toes (dominant)

12. Hallux(recessive, shorter 2nd toe)
vs. Morton’s Toe (dominant,
longer 2nd toe)

13. Tongue Folding (recessive)

14. Interlacing fingers
 Dominant (left thumb over right)
 Recessive (right thumb over left)

15. Trait Phenotype Dom or Genotype
recess
phenoty?
Tongue Rolling (Dominant) roll/not roll
Widow's Peak (D) - just like Eddie Munster yes/no
Wet ear wax (D) - stick your finger in to check wet/dry
L/R interlocking finger (D) - without thinking, clasp your hands L/R or R/L
together, is the right thumb over the left, or vice versa?
Attached earlobes (D) yes/no
Hitchhiker Thumb (r) - does it bend back at a 90 angle yes/no
PTC tasting (D) - I'll have some test paper in class yes/no
Chin fissure (D) - like actor Michael Douglas yes/no
Darwin tubercle (D) yes/no
S-methylthioester detection (Recessive) - can you smell asparagus yes/no
odor in urine?
Pigmented iris (D) - any color but blue yes/no
Freckles (D) yes/no
Polydactyl (D) yes/no
Dimples (D) yes/no
Wooly hair (R) yes/no
Long eyelashes (> 1cm; D) yes/no
Short big toe (D) - the big toe is shorter than your second one yes/no