Consider a Phylogeny of Metazoans

question 84

Multiple Choice

Consider a phylogeny of metazoans.Snakes, which lack limbs, evolved from vertebrates that had legs.The limbs of snakes disappeared by _______, and the backbones of snakes are a _______.

• A) convergent evolution; synapomorphy
• B) an evolutionary reversal; synapomorphy
• C) convergent evolution; homoplastic trait
• D) an evolutionary reversal; homoplastic trait
• E) an evolutionary reversal; heteroplastic trait

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Definitions:

Competitive Price-Taker

A firm or individual in a market structure that has no control over the market price and must accept the prevailing market price for its product or service.

Output

The total amount of goods or services produced by a person, machine, company, or economy.

Price

The sum of money needed to buy a product or service.

Competitive Price-Taker

A firm in a competitive market that has no ability to influence the price of the product it sells; it must take the market price as given.