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

---

Definitions:

Affiliation Needs

A person's need to feel a sense of involvement and belonging within a social group.

Security Needs

A level in Maslow's hierarchy of needs, focusing on the desire for safety, stability, and protection from physical and emotional harm.

Affiliation Needs

The human desire to form and maintain interpersonal relationships, connections, and a sense of belonging.

Safety Needs

Basic human needs for security and protection from harm, as identified in Maslow's hierarchy of needs, following physiological needs.