Evolution Test Review

One of the major elements of natural selection is that all species have genetic

• digression

• melanism

• stability

• variation

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

• population will grow quickly

• all bacteria are already resistant

• they will get better at obtaining food source

• some may be resistant and survive

One of the biggest ways that a species evolves is because some organisms with some traits survive and reproduce better than others. This process is known as

• natural selection

• convergent evolution

• coevolution

• sexual selection

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 adaption is

• any trait an organism has

• how an organism evolves

• a gene an organism has

• a trait that helps an organism survive in its environment

genetic diversity is mainly the result of

• meiosis

• viruses

• mutations

Which of the following is not a principle of natural selection?

• most species produce more offspring than will actually survive

• organisms compete for limited resources

• evolution will occur as an organism gets older and learns more

• adaptations allows some organisms to survive and reproduce better

Which of the following is not an example of evolution?

• horses becoming taller and faster over a million years

• all species of tortoises descending from a common ancestor

• human brains becoming larger over time

• a caterpillar going through a change into a butterfly

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

• fewer mutations

• more offspring

• stronger genes

• better traits

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

• heritable

• new

• mutated

• better