Evolution Flashcard1

Front

What is geographic isolation?

Back

Geographic isolation occurs when a population is separated by physical barriers, such as mountains or rivers, preventing them from interbreeding.

Front

What is speciation?

Back

Speciation is the process by which new species arise, often due to populations becoming reproductively isolated from one another.

Front

What is temporal isolation?

Back

Temporal isolation is a reproductive barrier where two species breed at different times, preventing them from interbreeding.

Front

What is behavioral isolation?

Back

Behavioral isolation occurs when two populations have different mating behaviors or rituals, leading to reproductive isolation.

Front

What is divergent evolution?

Back

Divergent evolution is the process where two or more related species become more dissimilar over time, often due to different environmental pressures.

Front

What is convergent evolution?

Back

Convergent evolution occurs when unrelated species develop similar traits or adaptations due to similar environmental challenges.

Front

What is parallel evolution?

Back

Parallel evolution is when two related species evolve similar traits independently, often because they adapt to similar environments.

Front

What is gametic isolation?

Back

Gametic isolation is a reproductive barrier where sperm and egg from different species cannot fuse to form a zygote.

Front

What is the significance of allele frequency in populations?

Back

Changes in allele frequency within a population can indicate evolution and speciation, as they reflect genetic variation.

Front

What is the role of environmental factors in speciation?

Back

Environmental factors can lead to speciation by creating different selective pressures on populations, leading to adaptations.