Use the Following to Answer Questions

question 66

Multiple Choice

Use the following to answer questions:
In a hypothetical experiment, researchers split a bacterial colony in two, allowing each of the new colonies to evolve separately. They then sequenced a gene from colony 1 and colony 2.
-In the common ancestor, the nucleotide at site 56 is A. In colony 1, it changes to C; in colony 2, it changes to T. This is an example of a _______ substitution.

• A) single
• B) coincident
• C) parallel
• D) back
• E) multiple

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Definitions:

Dyspnea

Difficulty or labored breathing, often experienced as a feeling of shortness of breath.

Chronic Lung Disease

A broad term for long-term respiratory disorders that obstruct air flow and cause breathing difficulties.

Bronchitis

Inflammation of the bronchial tubes, often characterized by coughing, wheezing, and difficulty breathing.

Moistened

Slightly wet or dampened; having moisture added to make something slightly wet.