The Cross-Sectional Method of Studying Age-Related Change

question 20

Multiple Choice

The cross-sectional method of studying age-related change:

• A) Collects data on the same subjects over time (5 years or more)
• B) Collects data on different aged subjects
• C) Is the best for developmental studies
• D) Is seldom used
• E) Tells us little about age differences

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Definitions:

Speciation

The evolutionary process by which populations evolve to become distinct species, primarily through genetic divergence and reproductive isolation.

Evolutionary Processes

The natural mechanisms that lead to changes in genetic composition of populations over successive generations.

Cladogenesis

An evolutionary splitting event where a single lineage divides into two distinct lineages, leading to increased biodiversity.

Anagenesis

The gradual evolution of a species to a new form, without branching or diversification into multiple species.