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Evolution Test

Last updated over 3 years ago
26 questions
1

On the Galápagos Islands, Charles Darwin observed

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Scientists believe that 225 million years ago all of the continents were attached as one supercontinent called Pangea. Which was most likely a consequence of the breakup of the Pangea on evolution?

1

According to Darwin, natural selection is based on the ___________ found in populations.

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The Galapagos finches evolved from the finches found on the mainland of Ecuador. The evolution of the various species of finches is an example of

1

Natural selection can best be defined as the _____.

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An insect that exhibits resistance to a pesticide

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Tortoises on one island had short legs to better move on rocky land. Tortoises on another island had longer legs to move through grass. Which statement best summarizes this information?

1

A genetic change will usually be maintained in a population if the change

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Related organisms become less alike by

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In humans, the pelvis and femur, or thigh bone, are involved in walking. In whales, the pelvis and femur shown below are

1

Two individuals are members of the same species if they

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A student conducts an experiment to test how reptiles’ skin color affects survival rate. She places 100 green lizards and 100 brown lizards in a marked area in a forest. After 10 days she returns to count how many lizards of each color survived. As a follow-up, she places 100 green lizards and 100 brown lizards in a desert. After 10 days she counts how many lizards of each color are alive. The # of surviving lizards is below. Which of the following statements could the student use as a conclusion to her experiment?

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Students were given the amino acid sequence of hemoglobin (a protein) for humans & several other species. They counted the # of differences between humans & each species. According to these results, which species is most closely related to the human?

1

Frogs and turtles have the same number of amino acid differences from humans. Students were asked to determine which species is more closely related to humans, frogs or turtles. One student wrote “frogs because the bone structure in their legs is more like humans”. Which type of evidence for evolution did the student use in his statement?

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All the genes of all members of a particular population make up the population’s

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A type of fish has an allele that codes for a small fin, which causes slow swimming. The fish that have this allele become easy prey. What will happen to this allele in the gene pool over time?

1

The picture below shows the limbs of several organisms. They have the same bones but are used for different functions. These are an example of

1

Male frigate birds are black with red skin at the throat. During courtship, the male forces air into the red sac, causing it to inflate. If the display is attractive enough, then the female will land beside the male to mate. Male frigate birds that don’t have an attractive red throat will be less likely to reproduce. What term best describes the male frigate bird’s red throat color?

1

See the information about frigate birds in the question above.
If the mating ritual of some of the birds changed over time and they could no longer mate with the rest of the group, this would be an example of

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The Kaibab squirrel and Abert squirrel were originally part of the same species. The Grand Canyon separated these two populations for the last 10,000 years and both evolved separate traits. They are now 2 different species. What caused the speciation described above?

1

See the information in the question above. Which type of evolution is described above?

1

In the butterfly species above light butterflies blend in well with the flowers and dark ones are attractive to the other sex. Both of these colors are more “fit” than the middle range colors. What type of selection is this?

1

In one bird species, clutch size (the number of eggs laid by a female in one breeding season) ranges from four to eight and the most frequent clutch size is six. This phenomenon is an example of (2 points)

1

In the 1890s humans greatly over hunted the elephant seal causing their population to drop to only 20. What is this an example of?

1

Short-necked giraffes were at a disadvantage for getting food in tall trees. As a result, the long neck phenotype was favored in giraffes. Over time, long necks became the standard trait for giraffes. What type of selection is this?

1

Natural Selection is usually simplified to the phrase "Survival of the Fittest." A better term might be "Differential Reproductive Success." With that in mind, which of the following examples would be considered the most fit individual?