Biology II Speciation and History of Earth

If the percentage of blue alleles in a butterfly population changes from 20% to 40%. What could you say about the population?

• the population is expanding

• the population is evolving

• the population is decreasing

• the population is not evolving

What is a change or mistake in a genetic code?

• recombination

• polygenic trait

• single-gene trait

• mutation

How is the frequency of the phenotypes for a polygenic trait (like skin color) illustrated?

• scatter-plot

• bell--shaped curve

• pie chart

• histogram

Which type of traits tend to have more phenotypes?

• single-gene traits

• polygenic traits

Which type of selection?

• Stabilizing

• Disruptive

• Directional

What type of selection?

• Directional

• Stabilizing

• Disruptive

What type of selection?

• Disruptive

• Directional

• Stabilizing

What is isolation of a group by barriers called?

• Temporal Isolation

• Behavioral Isolation

• Genetic Isolation

• Geographic Isolation

What is necessary for the creation of a new species?

• reproduction at different times

• geographic barriers

• different mating behaviors

• reproductive isolation

What defines a species?

• Temporal isolation

• Geographic isolation

• Mate and produce offspring

• Identical genes