A Gene Is

question 64

Multiple Choice

A gene is:

• A)a structure within the cell nucleus that houses DNA.
• B)a portion of DNA that codes for a single protein.
• C)a sequence of three nucleotides that codes for a single amino acid.
• D)a portion of a protein that codes for a single amino acid.
• E)none of the above

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Definitions:

Hominin

Any of a group of extinct and living humans. Also called hominid.

Supraorbital Ridge

A prominent ridge of bone located above the eye sockets on the frontal bone of the skull.

First Toe

The big toe on the human foot, which plays a crucial role in balance and walking by bearing much of the weight of the body.

Out-of-Africa Hypothesis

A theory proposing that modern humans originated in Africa and dispersed to other continents, replacing previously existing hominid species.