Two Different Species Are Crossed and the Second Generation (F₂)

question 41

Multiple Choice

Two different species are crossed and the second generation (F₂) illustrates reduced fitness. This is an example of ____.

• A) behavioral isolation
• B) gametic isolation
• C) hybrid breakdown
• D) crossing over
• E) hybrid sterility

---

Definitions:

Multiple Births

The delivery of more than one baby from the same pregnancy, such as twins or triplets.

Canalized Traits

Genetic characteristics that are not easily changed by environmental factors due to their strong genetic control.

Genetic Relationship

The connection between organisms based on the similarity of their DNA sequences.

Nonshared Environmental

Influences that result in differences among siblings, including experiences outside the family that are not shared by other siblings.