A Population of Plants Experiences Divergence as a Result of a Newly

question 22

Multiple Choice

A population of plants experiences divergence as a result of a newly established environmental gradient. Although there is not a geographic barrier, reproduction between the two populations is increasingly rare and a hybrid zone has clearly established. As speciation continues, the hybrids experience lower and lower fecundity, and, increasingly, seeds that are produced by the hybrids are sterile. This is an example of what process?

• A) reproductive character displacement
• B) Dobzhansky-Muller incompatibility
• C) secondary reinforcement
• D) allopatric speciation

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Definitions:

Absorption Costing

An accounting method that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed overhead - in the cost of a product.

Variable Costing

An accounting method that includes only variable production costs (materials, labor, and overhead) in product costs and treats fixed costs as period expenses.

Profit Reported

The financial gain disclosed by a business, typically over a specific period, after all expenses have been deducted from total revenues.

Production and Sales

The activities involved in manufacturing goods and then selling them to customers, reflecting the entire flow from production to revenue generation.