​When a Physical Barrier Separates a Population, Leading to the Evolution

question 23

Multiple Choice

​When a physical barrier separates a population, leading to the evolution of new species on either side of the barrier, ____ has occurred.

• A) ​sympatric speciation
• B) ​allopatric speciation
• C) ​directional selection
• D) ​ecological isolation
• E) ​behavioral isolation

---

Definitions:

Indifference Curves

Graphical representations of different bundles of goods between which a consumer is indifferent, showing their preferences.

Transitive Preferences

A condition in consumer choice theory where if a person prefers option A over B and option B over C, then the person also prefers option A over C, ensuring consistent choices.

Commodities

Basic goods used in commerce that are interchangeable with other goods of the same type.

Transitive

In economics and decision theory, referring to preferences that are consistent in their ranking: if option A is preferred over B, and B over C, then A is preferred over C.