Some Researchers Claim That Sponge Genomes Have Homeotic Genes, but No

question 5

Multiple Choice

Some researchers claim that sponge genomes have homeotic genes, but no Hox genes. If true, this finding would ________.

• A) mean that sponges must no longer be classified as animals
• B) confirm the identity of sponges as "basal animals"
• C) mean that extinct sponges must have been the last common ancestor of animals and fungi
• D) require sponges to be reclassified as choanoflagellates

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Definitions:

Zero Profits

A situation where a firm's total revenues exactly equal its total costs, typically in the long run in perfectly competitive markets.

Monopolistic Competition

A market structure characterized by many firms selling products that are similar but not identical, with few barriers to entry.

Price Exceeds Marginal Cost

A situation where the price of a good is higher than the marginal cost of producing it, often indicating imperfect competition.

Excess Capacity

The situation where a firm is producing at a lower scale of output than it has been designed to handle, resulting in unused productive capacity.