What Is the Most Probable Explanation for the Continued Presence

question 31

Multiple Choice

What is the most probable explanation for the continued presence of pseudogenes in a genome such as our own?

• A) They are genes that had a function at one time, but that have lost their function because they have been translocated to a new location.
• B) They are genes that have accumulated mutations to such a degree that they would code for different functional products if activated.
• C) They are duplicates or near duplicates of functional genes but cannot function because they would provide inappropriate dosage of protein products.
• D) They are genes with significant inverted sequences.
• E) They are genes that are not expressed, even though they have nearly identical sequences to expressed genes.

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Definitions:

Stress

The body's response to any demand or challenge, which can be triggered by both positive and negative experiences and can affect mental and physical health.

Stress Response

A physical and psychological reaction to a demand or threat, involving release of stress hormones and activation of the sympathetic nervous system.

Metabolism

The set of life-sustaining chemical transformations within the cells of living organisms, involving the conversion of energy from food into cellular components and waste products.

Epinephrine Levels

The concentration of epinephrine, a hormone and neurotransmitter also known as adrenaline, in the bloodstream, affecting bodily responses to stress.