Evolution Review

A population of bacteria is treated with hand sanitizer. Because of genetic variation in the population, what is the outcome?

• The population will grow quickly

• Some bacteria are already resistant

• They will get better at obtaining a food source

• Some may be resistant and survive

Slow evolutionary changes over a long period of time

• Gradualism

• Speciation

• Punctuated Equilibrium

• Convergent Evolution

Genes for traits that help an organism be more successful reproductively can be expected to

• cause it to evolve into a new species

• become more common in the future

• cause the extinction of the species

• eventually be eliminated by natural selection

An adaptation is

• any trait an organism possesses

• how an organism evolves during its own lifetime

• a gene an organism has

• a trait that helps an organism survive in its enviornment

Genetic diversity is ultimately the result of

• meiosis

• viruses

• random mutation

• reproduction

Which of the following is not an example of evolution?

• Horses becoming taller and faster over millions of years

• All species of tortoises in the Galapagos islands descending from a common ancestor

• Human brains becoming larger over time

• A caterpillar going a change into a butterfly

Which of the following does NOT increase genetic variation?

• Mutations

• Gene flow

• Mitosis

• Crossing OVer

Natural selection results in a change in time by acting on traits that are ______

• heritable

• new

• mutated

• better

Individuals that are well adapted to their environment will survive and produce ___

• fewer mtuations

• more offspring

• stronger genes

• better traits

Which pattern of evolution results in one species splitting into many over time?

• Coevolution

• Divergent evolution

• Convergent evolution

• Sexual selection