Geological versus Biological Evolution

Geological versus Biological Evolution

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Fill in the Blank

Evolution is the gradual ______ in a species over time.

Evidence for biological evolution

• Comparative anatomy(homologous and analogous structures)

• Fossil Record

• DNA

Evidence for geological evolution(Earth changes over time)

• Law of Superposition

• Ice Cores

• The theory of Plate Tectonics

Multiple Select

Check all of the evidence that is used for geological evolution

• ice cores

• comparative anatomy

• law of superposition

• the theory of plate tectonics

Multiple Choice

Which best describes the relationship between genetic variation and an

organism’s ability to adapt to its environment?

• The environment causes genetic variation in a population of

  organisms, which allows them to adapt to their environment.

• Genetic variations in a population of organisms result in individuals

  with similar genetic traits and the ability to adapt to their

  environment.

• Organisms of a population have certain traits that enable them to

  adapt to changes in the environment, survive, and pass these traits

  on to offspring.

• A population of organisms with little genetic variation is better able

  to adapt to changes in their environment than organisms with a lot of

  genetic variation.

Multiple Choice

Which best accounts for the changes in the horse?

• Through artificial selection, larger horses survived and were chosen to

  reproduce offspring.

• Through artificial selection, small horses were bred out of the gene

  pool, leaving only larger horses.

• Through natural selection, favorable adaptations were passed to

  offspring, allowing for the evolution of the horse.

• Through natural selection, horses acquired traits that produced

  changes and then were passed on to their offspring.

Multiple Choice

Which is the main cause of the variation in traits within a population of

organisms?

• genetic mutations

• common ancestors

• reduction of habitats

• environmental conditions

Multiple Choice

Which best explains why mammals became dominant after the mass extinction of the dinosaurs?

• They had traits that helped them adapt to environmental changes.

• They were larger than dinosaurs and ate different foods.

• They lived in different areas on Earth than dinosaurs.

• They were able to hibernate for thousands of years.