EVOLUTION

What is evolution?

• A sudden change in an individual’s DNA

• A change in a species over time

• The ability to survive without adapting

• The appearance of new species overnight

Which of these is an example of a homologous structure?

• The wings of a bat and the fins of a fish

• The forelimbs of a human, cat, whale, and bat

• The tail of a monkey and the trunk of an elephant
  

• The legs of an insect and the legs of a horse

What is the main cause of variation in a population?

• Mutations in DNA

• Selective breeding

• Natural disasters

• Migration

The engine that drives evolution is

The movement of alleles from one population to another

What did Darwin’s finches demonstrate?

• Genetic mutations happen instantly

• Beak shapes evolved based on food sources

• Evolution only happens in birds

• Finches were the first species to evolve

What type of structures suggest common ancestry between species?

• Analogous structures

• Homologous structures

• Vestigial structures

• Artificial structures

What is an example of a vestigial structure in humans?

• The lungs

• The appendix

• The brain

• The heart

Which type of evidence supports evolution by showing similarities in DNA and proteins among species?

• Molecular evidence

• Biogeographical evidence

• Embryological evidence

• Fossil evidence

What is genetic drift?

• A slow, predictable change in all populations

• A mutation that leads to new species

• A migration event that increases diversity

• A random change in allele frequencies due to chance events