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:

House Painter

A professional tradesperson responsible for painting and decorating buildings, ensuring protection and enhancing aesthetic appeal.

Houses

Structures used as living quarters for one or more persons, typically families.

Diminishing Marginal Product

The principle stating that as additional units of a variable input are added to a fixed input, the additional output from each new unit of input will eventually decrease.

Fixed Cost

A cost that does not change with an increase or decrease in the amount of goods or services produced.