Evolution Video Quiz

What does 'fitness' mean in a biological context?

• The ability to adapt to environments

• The strength of an organism

• The speed of an organism

• The number of offspring an organism produces

Which mechanism of evolution involves the movement of genes between populations?

• Mutation

• Gene flow

• Genetic drift

• Natural selection

What is a vestigial structure?

• A structure that increases an organism's fitness

• A structure that is essential for survival

• A structure inherited from ancestors that has lost most of its original function

• A structure that is newly evolved

What does the fossil record help scientists understand?

• Changes in population characteristics over time

• The diet preferences of ancient organisms

• The color of ancient organisms

• The names of all ancient organisms

How does biogeography support the theory of evolution?

• By indicating that all organisms have the same structures

• By proving that all organisms originated from the same location

• By demonstrating that closer populations are more genetically similar

• By showing that organisms on islands are less diverse