Which Is Not True of Homeotic Genes

question 31

Multiple Choice

Which is not true of homeotic genes?

• A) They are similar in very different organisms.
• B) They control the expression of other genes.
• C) They cause every cell in an organism to behave identically.
• D) They are evolutionarily old.

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Definitions:

Trichromatic Theory

A theory explaining how the human eye perceives color through the response of three types of cones sensitive to red, green, and blue light.

Dichromatic Theory

A hypothesis in color vision proposing that two types of color receptors (cones) in the eyes are responsible for color perception.

Lateral Geniculate Nucleus

A structure in the thalamus that acts as a relay center for visual information received from the retina to the visual cortex.

Trichromatic Theory

A theory explaining the color vision process in humans, suggesting that the retina contains three types of color receptors sensitive to different wavelengths: red, green, and blue.