Evolution Review

Which of the following are selection pressures in nature?

• Selective breeding by humans

• Available food

• classification of organisms

• Competition for mates

• Hot, dry climate

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What is the cause of the biodiversity found on the planet today?

• Populations or organisms adapting to different environments

• An asteroid carrying organisms to Earth from another planet

• Individual organisms acquiring traits to help them survive

• A series of mutations leading to a KNOWN outcome

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When does natural selection happen the fastest in nature?

• when there is a large change to the environment

• when the species are most closely related to eachother

• when there are little to no mutations happening

• when there is very little genetic diversity

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How would a warming climate affect the species in an ecosystem?

• individuals might die off but a species cannot disappear completely

• species would increase in number to offset the numbers killed by the heat

• species that have never been seen before would suddenly appear

• individuals best able to survive the heat would become more numerous

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Which of the following are adaptations for attracting mates in a population?

• the protective bony armor on an armadillo

• male lyrebirds mimicking the songs of other birds in the forest

• the colorful plumage on a male peacocks tail

• similar coloration of male and female red-tailed hawks

• larger body size and antlers in bull elk

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In a cooling environment, which species will have the best chance for survival?

• the one with the smartest individuals

• the one with the smallest body size

• the one with the most genetic variation

• the one with the largest population

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Which of the following are examples of geographic isolation?

• When a storm blows a population of finches to a new island so they can no longer mate with the finches on the mainland

• A mountain range prevents two types of goat from mating, causing the gene pool to become less varied

• Two populations of deer living near each other happen to mate during different times of the year

• A deepening canyon cuts two populations of squirrels off from each other

• Two populations of birds have developed different mating calls

Which of the following would most likely prevent two populations of field mice from breeding?

• Active time of day

• Color

• Average weight

• Favorite food

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What is speciation?

• when a population reaches a balance and change is no longer occuring

• when populations move away from each other

• when species begin to pass on acquired traits and change their behavior

• when two species can no longer interbreed

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How have 340 breeds of dogs emerged from wolves?

• natural selection has allowed the toughest dogs to survive

• humans have selectively bred dogs for desired traits

• wolves have a diverse gene pool that contains many variations

• dogs have been scattered by humans to many new places

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