Darwin's Primary Scientific Achievement Was Identifying the ____

question 62

Multiple Choice

Darwin's primary scientific achievement was identifying the ____.

• A) method for estimating the age of fossils
• B) idea that organisms change over time and form new species
• C) process by which genes are passed from one generation to the next
• D) concept of gene pools and changes in allele frequencies
• E) mechanism by which populations of organisms change over time

---

Definitions:

Unconditioned Stimuli

Stimuli that naturally and automatically trigger a response without any prior learning.

Conditioned Stimuli

Stimuli that have become associated with a particular response through conditioning, typically in the context of classical conditioning.

Sign-Stimuli

External sensory cues that trigger a specific, often instinctual, behavior in an organism.

Classical Conditioning

A learning process that involves creating associations between a naturally occurring stimulus and a previously neutral stimulus.