Traits That Are Controlled by Two or More Genes Are

question 13

Multiple Choice

Traits that are controlled by two or more genes are

• A) polygenic.
• B) dominant.
• C) recessive.
• D) multifactorial.
• E) none of these.

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Definitions:

Optic Disc

The point on the retina at which the optic nerve fibers exit the eye, creating the blind spot as it lacks photoreceptors.

Fovea Centralis

A small depression in the retina of the eye where visual acuity is highest, due to the concentration of cone cells.

Blind Spot

The blind spot is an area on the retina without photoreceptors where the optic nerve exits the eye, resulting in a gap in the visual field.

Astigmatism

A common vision condition causing blurred vision due to an irregular curvature of the cornea or the lens inside the eye.