The Most Likely Explanation for the Fact That the Human

question 24

Multiple Choice

The most likely explanation for the fact that the human genome consists of 3.2 billion bases,and encodes about 20,325 proteins,is that

• A) all of the genome encodes protein.
• B) the genome includes many copies of the instructions for each type of protein.
• C) amino acids encode DNA sequences.
• D) much of the genome does not encode protein.
• E) each protein is encoded by about 160,000 DNA bases.

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Definitions:

24-hour Period

A full day; the time it takes for the Earth to complete one rotation on its axis, comprising day and night.

Sleep Terrors

A sleep disorder involving intense fear, screaming, and flailing while asleep, often without waking fully.

Rapid-eye-movement Sleep

A phase of sleep characterized by rapid movements of the eyes, low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.

Deep Sleep

A phase of sleep characterized by slow brain waves, known as delta waves, during which recuperation and memory consolidation occur.