The Upper Forelimbs of Humans and Bats Have Fairly Similar

question 7

Multiple Choice

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?

• A) Forelimb evolution was adaptive in people and bats, but not in whales.
• B) Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy.
• C) Genes mutate faster in whales than in humans or bats.
• D) Whales are not properly classified as mammals.

---

Definitions:

Hotdog Eating Contests

Competitive eating events where participants race to eat as many hotdogs as possible within a given time limit.

Learning-Goal Orientation

A mindset focused on developing new skills, knowledge, and competencies, rather than merely demonstrating proficiency.

Competency

The combination of skills, knowledge, abilities, and behaviors that are necessary to perform a specific task or role effectively.

Effective Goals

Objectives that are specific, measurable, attainable, relevant, and time-bound, facilitating clearer paths to achievement.