The Ability to Roll the Edges of the Tongue Upward

question 17

Multiple Choice

The ability to roll the edges of the tongue upward in a U-shape is inherited as a dominant allele at a single gene locus. Which of the following genotypes would produce an individual that can roll their tongue?

• A) TT only
• B) Tt only
• C) tt only
• D) TT or Tt
• E) Tt or tt

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Definitions:

Opponent-Process Theory

A psychological and neurological model that explains how the perception of colors is controlled by two opposing systems, leading to color vision.

Afterimage

A visual phenomenon where an image continues to appear in one's vision after the exposure to the original image has ceased.

Opponent Cells

Specialized cells in the visual system that help perceive color by opposing each other.

Pitch

The perception of the frequency of a sound, determining how high or low a tone sounds.