The Upper Forelimbs of Humans and Bats Have Fairly Similar

question 53

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

Interpret the financial implications of costing choices on business profitability.

Understand the concept and differences between absorption costing and variable costing.

Calculate unit product costs under both absorption costing and variable costing.

Determine the net operating income (loss) under both absorption costing and variable costing.

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Definitions:

Pseudoparkinsonism

A condition that mimics the symptoms of Parkinson’s disease, such as tremors, rigidity, and bradykinesia, often caused by medication side effects.

Propulsive Gait

A type of walking where the person seems to be pushed forward, with quick, small steps; often associated with neurological disorders like Parkinson's disease.

Waxy Flexibility

A symptom of catatonia characterized by the maintenance of a body position or posture in which the person's limbs remain in the position they are placed by another person.

Spontaneous Movement

Unplanned, voluntary or involuntary movements that occur without conscious thought or intention.