Mechanisms of Evolution

Evolution that is characterized by long periods of stability in the characteristics of an organism and short periods of rapid change such as what is occurring in the image above is called ________________.

• punctuated equilibrium

• gradualism

• no evolution

• rapid and gradual

What type of evolution occurred with these butterflies?

• punctuated equilibrium

• gradualism

• no evolution

• rapid and gradual

Evolution that occurred slowly and gradually such as what is occurring in the image above is called ______________.

• punctuated equilibrium

• gradualism

• no evolution

• rapid and gradual

What type of evolution occurred with these butterflies?

• punctuated equilibrium

• gradualism

• no evolution

• rapid and gradual

Due to chance environmental events and natural disasters, cheetahs have a decrease in genetic variation. What mechanism of evolution caused this occurance?

• Genetic Drift

• Natural Selection

• Gene Flow

Due to normal migration patterns of the butterfly, a yellow butterfly moved to the orange butterfly population increasing the new populations genetic variation. Which mechanism of evolution caused this occurance?

• Gene Flow

• Genetic Drift

• Natural Selection

The biological fitness of the brown beetle allows it to blend in with its habitat so that it can continue to survive and reproduce. This is an example of which type of mechanism of evolution?

• Natural Selection

• Gene Flow

• Genetic Drift

Match the following

• Mechanisms of Evolution

• Change over time

• Natural Selection

• Organism of one population moving to another population adding genetic variation

• Evolution

• Causes of Change over time

• Gene Flow

• caused by chance events, decreasing genetic variation

• Genetic Drfit

• The survive and reproduce

Match the following

• Natural Selection

• 
• Competition

• 
• Mimicry

• 
• Gene Flow

• 
• Genetic Drift

• 

With every breeze, this dandelion's seeds are being dispersed into the wind for cross pollination with neighboring dandelions in other pastures. This is what type of mechanism of evolution?

• Natural Selection

• Gene Flow

• Genetic Drift