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25 questions
What type of selection is depicted in the picture?
stabilizing
directional
disruptive
What type of natural selection is this: When a group of deer migrated to a cold mountain, the thin-furred deer and average-furred deer died. The thick-furred deer survived and eventually the population became thicker-furred.
Disruptive Selection
Directional Selection
Stabilizing Selection
As an environment changes, some organisms have a higher fitness than others in the new environment. This can lead to __________. Choose the correct answer.
lower genetic variation in the offspring of organisms with higher fitness
greater genetic variation in the offspring of organisms with lower fitness
greater reproductive rates and survivorship of those organisms with lower fitness
greater reproductive rates and survivorship of those organisms with higher fitness
Type of selection where the average or middle trait is favored. | Stabilizing selection | ||
Type of selection where one extreme or end trait is favored. | Directional selection | ||
Type of selection where both extremes or end traits are favored. | Disruptive selection | ||
The environment conditions favor certain phenotypes. | Natural selection | ||
Humans manipulate the phenotypes that are selected or favored. | Artificial selection |
In a wild leopard population, cubs that are born with low birth weights lose heat more quickly and tend to die, while babies that are too large are not able to deliver through the pelvic bones of the mother leopard. This leads to a high mortality rate for cubs that are born too small or too large. Which changes in the population would you expect to see?
Which processes would MOST LIKELY lead to a variation in the tail lengths of mice? (Select TWO that apply)
Hibernation
Sexual reproduction
Asexual reproduction
Migration
Mutation
Many different groups of organisms have wings, even though they do not share a recent common ancestor. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ______________ structure.
vestigial
analogous
homologous
What type of evidence is represented in the picture above:
Fossils
Vestigial Structures
DNA
Homologous Structures
A type of structure that is physically present, but does not seem to serve a significant function for an organism.
Homologous structure
Analogous structure
Vestigial structure
Standard structure
Individuals undergo evolution.
True
False
Which statement is true about this diagram?
The raccoon is more closely related to the dog than the lesser panda
The sun bear and brown bear are not closely related
The great panda doesn't share a common ancestor with spectacled bears
Lesser pandas and dogs share a common ancestor
Which term is used to describe when a generation has more offspring than can be supported by the environment?
overproduction
natural selection
homologous structure
gradualism
Which two living organisms are most closely related?
A and B
B and C
C and D
B and D
A and D
Physical differences between males and females of the same species, like the bright feathers on the male peacocks or the large mane on male lions, is called ____________________________.
polydactyly
sexual dimorphism
polymorphism
analogous structures
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