Unit 4: Evolution.4

What is evolutionary radiation?

• A method to measure DNA similarity

• A type of genetic mutation

• Diversification of species

• A process where species become extinct

What is adaptive radiation?

• A process where species become extinct

• A type of genetic mutation

• An evolutionary process where organisms diversify rapidly from an ancestral species

• A method to measure DNA similarity

What is a key adaptation?

• A novel phenotypic trait that allows an organism to exploit a new niche

• A type of genetic mutation

• A process where species become extinct

• A method to measure DNA similarity

What is a molecular clock?

• A technique that uses a mutation rate to deduce when two or more lifeforms diverged

• A device to measure time

• A type of genetic mutation

• A method to measure DNA similarity

What is a conserved gene?

• A gene that has remained essentially unchanged throughout evolution

• A gene that mutates rapidly

• A gene that causes extinction

• A gene that is only found in one species

What is phylogeny?

• A process where species become extinct

• The evolutionary history of a kind of organism

• A method to measure DNA similarity

• A type of genetic mutation

What is the aim of studying evolutionary phylogenetic relationships?

• To understand the concept of evolution and identify mass extinction events

• To measure DNA similarity

• To create new species

• To stop evolution

What is the significance of random mutations in populations?

• They always lead to extinction

• They create new variations that can occupy available environmental niches

• They only occur in one species

• They have no effect on evolution

What is required for adaptive radiation to occur?

• A common ancestor with a crucial adaptation

• A stable environment

• No environmental pressures

• A high mutation rate

What is divergent evolution?

• When two species become identical

• When a species does not change

• When a species becomes extinct

• When two populations share a common ancestor and differences accumulate over time