Which of these statements about Natural Selection is correct?
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1 point
Traits that negatively affect survival are more likely to be common in the population.
The fittest organisms are better able to survive and reproduce in an environment.
Populations tend to produce fewer individuals than the environment can support.
Stable environments help shift populations' genetic variance toward a new trait.
What information can fossils provide to our understanding of biology?
1 point
Fossils can be used to verify common ancestry.
Fossils can be used to determine all causes of extinction.
Fossils can be used to provide an exact timeline of organisms.
Fossils can be used to predict future environmental conditions.
An archaeologist uncovers some bones the he suspects belonged to a relative of today's modern horse. What is the Best method of testing this belief?
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1 point
Perform a cytochrome c comparison of the two subjects.
Create a model of bones from similar burial sites.
Perform a DNA comparison of the two subjects.
Create a model showing the two organisms side by side.
The picture shows 14 species of finches from the Galapagos islands that are likely descended from a single species. Which explanation best describes the biodiversity of the finches.
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1 point
Captionless Image
The finches migrated from different areas.
The finches descended from different ancestors.
The finches adapted to different climates.
The finches adapted to different food sources.
Which statement provides the best argument form why bird and butterfly wings evolved to have similar function but differ in structure.
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1 point
This is an example of embryological structures.
This is an example of vestigial structures.
This is an example of analogous structures.
This is an example of homologous structures.
Which statement best explains why two different plant species have the same two types of chlorophyll present?
1 point
Both plants share a common ancestor.
Both plants produce asexually.
Both plants are flowering plants.
Both plants live in the same location.
Look at the following image of parts of a whale. In humans, the pelvis and femur, or thigh bone, are involved in walking. What is true of the pelvis and femur in living whales.
1 point
They are examples of fossils.
They are vestigial structures.
They are acquired traits.
They are examples of natural variation.
Which statement best explains why the influenza vaccine must be updated every year?
1 point
Some years, the influenza vaccine is not as strong as in others.
Some years, the influenza vaccine kills the virus, while in other years it does not.
The influenza virus adapts and mutates every year, so new vaccines must be produced.
The influenza vaccine does not necessarily stimulate the immune system to produce antigens.
Adaptations in a population may lead to evolution of new species. Which word is associated with the process of evolution?
1 point
change
continuity
extinction
stabililty
Some weed species have developed the ability to resist pesticides. How does the theory of evolution by natural selection help to explain this ability?
1 point
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The weeds chose pesticide resistant variations because their survival depended on it.
Due to genetic variation, some weeds in the population had the ability to resist pesticides.
As the weeds evolved, natural selection resulted in an unfavorable variation in the a population.
In any population of weeds, some weeds will naturally be immune to all kinds of pesticides.
The diagram shows the speciation of finches from different islands in the Galapagos Islands, as observed by Charles Darwin. Which statement best explains the pattern of biodiversity in the finch population.
1 point
Captionless Image
The finches are at various life stages.
The finches migrated from different places.
The finches do not have a common ancestor.
The finches do not have the same food sources.
A scientist noted that, over a period of 10 years, a Florida beetle species gradually become resistant to an insecticide. Which statement best explains this is terms of natural selection?
1 point
The insecticide mutated the beetles exposed to the biggest doses.
Some beetles used the insecticide as a source of food.
Beetles learned to avoid the spray and passed this knowledge of their offspring.
Those beetles with the natural resistance to the insecticide had the most offspring.
1 answer
1 answer