The Shared Genetic Code of All Life on Earth Is

question 21

Multiple Choice

The shared genetic code of all life on Earth is evidence that ________.

• A)the genetic code arose relatively late in the history of life on Earth
• B)DNA replication is error-free
• C)all life shares a common ancestry
• D)bacterial cells arose earlier than eukaryotic cells

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Definitions:

Esophageal

Pertaining to the esophagus, the tube that connects the throat to the stomach, through which food and liquids pass.

Voluntary

Refers to actions or movements performed by an individual that are done with conscious control.

Nasopharynx

The upper part of the pharynx, connecting the nasal cavity above the soft palate to the oropharynx.

Oropharynx

Portion of the pharynx that lies posterior to the oral cavity; it is continuous above with the nasopharynx and below with the laryngopharynx.