Evolution of Life & Human Impacts

Scientists have seen evidence of natural selection for which of these traits?

• those that make species vulnerable

• those that improve species' survival

• those that do not affect species' lifespans

• all of the above

Mosquito populations can evolve resistance very quickly because

• they have always possessed the adaptation to resist insecticides

• they have large population and short lifespan

• they have greater evolutionary capabilities than other species

• they have a small number of individuals, shortening the evolutionary process

In what way did the peppered moth population respond to this environmental impact (pollution during the Industrial Revolution)?

• The moths could no longer survive in the ecosystem, so the population die out.

• The proportion of light moths increased, and the proportion of the dark moths decreased.

• The moths lost the ability to camouflage entirely, so they evolved other adaptation

• The proportion of dark moths increased, and the proportion of light moth decreased.

What was the primary goal of the Beagle's Voyage?

• to map the coast of South America

• to transport passengers to North America

• to explore the Southern hemisphere

• to search for new forms of medicine

Darwin used the Galapagos finches as evidence that

• organisms in species have no relation to one another

• traits are not hereditary

• living things change over time

• birds are different than other species

What does genetic variation describe?

• similarities between species in an ecosystem

• similarities in the inherited traits of different individuals

• differences between various species' mating preference

• differences in the inherited traits of difference individuals

What question regarding the traits of Galapagos finches did Darwin consider for many years?

• Why were these finch species only found in certain parts of the world?

• How did this great variety of finch species survive in the same ecosystem?

• How had an original finch been modified in different ways for different purposes?

• Why couldn't finches with narrow beaks consume a diet of seeds in addition to insects?

How does the process of artificial selection occur?

• Humans select the organisms that reproduce in order to obtain offspring with desirable traits.

• In order to eliminate certain harmful species, humans select unfavorable organism to reproduce.

• Human support the process of natural selection by protecting species in their environments.

• Over many generations, species evolve by adapting traits to their natural environments.

What is an observation that scientist s have made about the effects of artificial selection?

• Its effects are only noticeable in certain plant and animal species.

• Its results often differ from what would occur in nature and natural selection

• The process must be repeated generations in order for it to be effective.

• It takes much longer for species to evolve through artificial selection than natural selection

What is one negative result of species' evolution through artificial selection?

• Species with artificially selected traits cannot interact with other artificially selected species.

• All species that have evolved through artificial selection are unable to reproduce naturally

• Artificially evolved traits make species ill-suited to survival in the wild

• One species have evolved through artificial selection, they cannot evolve through natural selection