Suppose That Two Species of Fish (Species a and B)

question 15

Multiple Choice

Suppose that two species of fish (species A and B) differ by ten substitutions in their globin genes, and that these fish diverged 5 million years ago (based on biogeographical evidence) .A third species (species C) differs from species A by 40 substitutions.Assuming the molecular clock has been operating, species A and C must have split from each other _______ million years ago.

• A) 5
• B) 10
• C) 20
• D) 40
• E) More information is required to answer this question.

---

Definitions:

Technical Competence

The ability and skills to perform specific tasks and functions related to a specific field of work or study.

Knowledge

Information, understanding, or skill acquired through experience or education; the theoretical or practical understanding of a subject.

Cognitive Skills

Mental capabilities that are involved in processing information, such as memory, reasoning, problem-solving, and attention.

Critical Thinking

The ability to analyze information objectively and make a reasoned judgment by evaluating evidence, analyzing assumptions, and understanding logical connections.