Mechanisms of Evolution

Which of the following is a possible way that inheritable genetic variations can occur?

• Binary fission

• Photosynthesis

• Meiosis

• Photosystem II

What is the primary purpose of meiosis in relation to inheritable genetic variations?

• To produce genetically identical cells

• To create new genetic combinations

• To repair errors in DNA replication

• To generate energy for the cell

Which type of evolution affects many populations?

• Microevolution

• Macroevolution

• Gene Flow

• Genetic Drift

Which of the following is NOT a source of genetic variation?

• Random Mutation

• Crossing-Over during Meiosis

• Migration

• Genetic Drift

The combined alleles of all individuals in a population are called its...

• DNA

• Gene Pool

• Genome

• Genetic Code

Mutations...

• Are always a bad thing

• Cannot change a large population

• Only occur in microevolution

• Increase genetic variation within a population

Gene Flow...

• Increases genetic variation

• Decreases genetic variation

• Increases population size

• Decreases population size

Genetic Drift causes...

• Increased genetic variation

• Loss of genetic variation

• Population growth

• Population decline

What does the image represent?

• Founder effect
• Bottleneck effect
• Natural Selection
• Mutations

What does the image represent?

• Gene flow
• Gene drift
• Mutation
• Adaptation