If You Look at Your Finger and Close One Eye

question 25

Multiple Choice

If you look at your finger and close one eye at a time, your finger seems to jump back and forth because the different positions of stimuli on your retinas.If you look at a distant object, however, there is less jumping of the image because

• A) there is less disparity in the positions of the image on the two retinas.
• B) binocular cells adjust for the distance of the object.
• C) the time it takes to perceive the distant object reduces the disparity between the position of the image on the two retinas.
• D) binocular vision is useful only for near objects.
• E) more binocular cells are stimulated.

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Definitions:

Dizygotic Twins

Twins that are born from separate eggs, fertilized by separate sperm, resulting in siblings that are genetically distinct, much like ordinary brothers or sisters.

Genes

Units of heredity made up of DNA, acting as instructions to make molecules called proteins, which play an essential role in determining the physical and functional traits of an organism.

Base Pairs

the building blocks of the DNA double helix, consisting of adenine (A) paired with thymine (T), and guanine (G) paired with cytosine (C).

Repeats Or Deletions

Refers to genetic mutations where segments of DNA are duplicated or missing, respectively, which can affect an organism's development or function.