Thursday, January 20, 2011

Genetic Traits (Dominant and Recessive)

Definition of Dominant Genetic Traits:
Dominant traits are traits that are dominant in a group of people; ex. if most people have brown eyes, brown eyes is the dominant trait.
Definition of Recessive Genetic Traits:
Recessive traits are traits that are recessive in a group of people; ex. if most people have brown eyes, as opposed to the small group that have blue eyes, blue eyes are the recessive genes.
Determine Which Observable Genetic Traits are Recessive and Dominant:
Eye Color:
Dominant: Brown
Recessive: Green, and Blue

Hair Color:
Dominant: Brown
Recessive: Blond, and Brown

Widow's Peak:
Dominant: No
Recessive: Yes

Ring-to-Point Finger Size:
Dominant: Equal
Recessive: Pointer, and Ring

Handedness:
Dominant: Right
Recessive: Left, and Both

Hand Grasp:
Dominant: Left
Recessive: Right

Attached/Detached Earlobes:
Dominant: Detached
Recessive: Attached

Tongue Roll:
Dominant: Yes
Recessive: No

Cleft Chin:
Dominant: No
Recessive: Yes

Dimples:
Dominant: No
Recessive: Yes

Freckles:
Dominant: No
Recessive: Yes

Curly Hair:
Dominant: No
Recessive: Yes

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