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- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is a factor in natural selection?
Individuals of species compete with one another to survive.
All species are genetically diverse.
Individuals better able to adapt to changes leave more offspring.
All of the above.
- Multiple ChoicePlease save your changes before editing any questions.
Individuals that are better able to cope with the challenges of their environment tend to
Increase in population over time.
Decrease in population over time.
Leave fewer offspring than those less suited to the environment.
Both (a) and (c)
- Multiple ChoicePlease save your changes before editing any questions.
Starting in 1954, commercial fishers in the northwest Pacific were paid by weight, rather than by the individual fish, for pink salmon. The fishers increased the use of a type of net that selectively catches larger fish. Which of the following effects did this change in fishing technique most likely have on the salmon population over the next 20 years?
The average body size of the salmon population decreased significantly.
The average body size of the salmon population increased significantly.
The average body size of the males in the salmon population increased, and the females stayed the same.
None of the above.
- Multiple ChoicePlease save your changes before editing any questions.
The Asian shore crab invaded parts of the eastern coast of the United States about 15 years ago. The Asian shore crab preys on blue mussels. In the time since the Asian shore crab arrived, the average shell thickness of the blue mussel population has increased.
Which of the following is the most likely reason that this increase in shell thickness has occurred?
Blue mussels with thick shells attract more crabs that mussels without thick shells.
Blue mussels with thick shells grow in larger colonies than mussels without thick shells.
Blue mussels with thick shells catch more food per day than mussels without thick shells.
Blue mussels with thick shells survive and reproduce more successfully than mussels without thick shells.
- Multiple ChoicePlease save your changes before editing any questions.
The process in which organisms with traits well suited to an environment are more likely to survive and to produce offspring is
Natural selection.
Genetic principles.
Origin of species.
Trait mechanism.
- Multiple ChoicePlease save your changes before editing any questions.
The theory of ‘common descent with modification’ states that all modern organisms
can change in response to environmental change
are descended from a single ancestral species
can be arranged in a linear order from “least evolved” to “most evolved”
Have not changed over time
- Multiple ChoicePlease save your changes before editing any questions.
which of the following is an example of microevolution?
a. the evolution pesticide resistance in pests
b. the increase in size, over time, of the horse species.
c. the change in color of the peppered moth due to pollution
Both A and C
- Multiple ChoicePlease save your changes before editing any questions.
The fossil record provides evidence that
Fossils cannot be dated.
All species were formed during Earth’s formation and have changed little since then.
The fossilized species have no connection to today’s species.
Older species gave rise to more-recent species.
- Multiple ChoicePlease save your changes before editing any questions.
Structures with the same parts but have different functions, suggesting that organisms with a backbone share common ancestry is called…
Not related
Not homologous
Homologous
Young in origin
- Multiple ChoicePlease save your changes before editing any questions.
Structures with no function that are remnants of an organism’s evolutionary past are
Not visible organisms
Young in origin
Vestigial
Useful to the organism
- Multiple ChoicePlease save your changes before editing any questions.
Comparing the human hemoglobin amino acid sequence to the chimpanzees, horses, kangaroos, and chickens, reveal that humans have the fewest amino acid differences with
kangaroos
horses
chickens
chimpanzees
- Multiple ChoicePlease save your changes before editing any questions.
The presence of pelvic bones in the baleen whale is evidence of which of the following?
Whales can travel on land when necessary.
Whales are developing into animals with four functioning limbs.
Whales have functional legs that are hidden by fat and skin.
Whales evolved from four-legged animals.
- Multiple ChoicePlease save your changes before editing any questions.
What is suggested by the similary of early embryos of different species of vertebrates?
No evolutionary relationship between the groups
A recent common ancestry
Similar environments in the past
Evolution from a distant common ancestor
- Multiple ChoicePlease save your changes before editing any questions.The theory of evolution by natural selection means that what is changing over time?The inherited traits of a population.The acquired traits of a population.Hair color and eye colorAttractive features.
- Multiple ChoicePlease save your changes before editing any questions.Mutations are a change in what?DNAtRNAgenotypephenotype
- Multiple ChoicePlease save your changes before editing any questions.The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?Dark mothLight mothBoth will be equally successfulNeither will be successful
- Multiple ChoicePlease save your changes before editing any questions.Since the 1800s humans have stopped burning coal, and the trees have returned to their original color. Which moth will be more successful in this environment?Dark mothLight mothBoth will be equally successfulNeither will be successful
- Multiple ChoicePlease save your changes before editing any questions.What process is being shown in this image?VariationNatural SelectionSelective BreedingHomeostasis
- Multiple ChoicePlease save your changes before editing any questions.Why is the mouse population changing over time?The light mice can reproduce more successfully than the dark miceThe hawks eat more dark mice than light mice because the dark mice taste betterThe hawks eat more light mice than dark mice because they can see the light mice more easilyThe hawks eat more dark mice than light mice because they can see the dark mice more easily
- Multiple ChoicePlease save your changes before editing any questions.These moths are all the same species. The differences between their wings is an example of ________________Natural SelectionVariationHomeostasisExtinction