Understanding Mechanisms of Evolution

What is the primary factor that defines evolution in a population?

• Change in population size

• Change in environmental conditions

• Change in individual behavior

• Change in gene frequency

Which of the following is NOT a mechanism of genetic change?

• Genetic Drift

• Photosynthesis

• Migration

• Mutation

How can migration affect the gene frequency in a population?

• By increasing the population size

• By causing mutations in existing genes

• By reducing the number of predators

• By introducing new individuals with different genes

What is genetic drift?

• A process where individuals migrate to new areas

• A random change in gene frequency from one generation to the next

• A deliberate selection of traits by humans

• A mutation that occurs in a population

Why might brown beetles become more common than green beetles over time?

• Brown beetles are more attractive to mates

• Green beetles are more likely to be eaten by predators

• Green beetles migrate to other areas

• Brown beetles reproduce faster