In a Sequence of DNA Taken from Various Species of Snails

question 185

Multiple Choice

In a sequence of DNA taken from various species of snails, researchers have found that the rates of nonsynonymous substitutions and synonymous substitutions are roughly the same.What can we infer from this pattern?

• A) Transversions are more common than transitions.
• B) Most of the amino acid changes are neutral.
• C) Strong purifying selection is acting on this gene.
• D) Strong positive selection is acting on this gene.
• E) This gene cannot be used as a molecular clock.

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Definitions:

Differentiation

The process of distinguishing or creating differences between objects, ideas, or aspects of experience, often to understand or categorize them more effectively.

Primary Circular Reactions

The repetitive actions that infants engage in to explore their bodies and the immediate environment, a concept introduced by Piaget within his stages of cognitive development.

Primary Indicates

Likely meant to be "Primary Indicators," which are main or core measures used to assess a condition or phenomenon.

Repetitive Actions

Actions or behaviors that are performed over and over again, often as part of a learning process or habit formation.