Selection Curves
Which type of curve shows a trait NOT undergoing natural selection?
A) Normal Distribution
B) Directional Selection
C) Disruptive Selection
D) Stabilizing Selection
A) Normal Distribution
What do we call a change in a species over time?
A- Adaptation
B- Evolution
C- Extinction
D- Environmental influences
B- Evolution
A measure of an organism’s ability to survive and reproduce relative to other members of the population in a given environment.
A) Adaptation
B) Speciation
C) Fitness
D) Variations
C) Fitness
A physical or behavioral trait that helps an organism survive and reproduce in its environment.
A- Adaptation
B- Trait
C- Mutation
D- Variation
A- Adaptation
Which of the following is NOT a source of evidence used in Darwin’s time to support the theory of evolution?
A) Fossils
B) Anatomy
C) Embryology
D) Geology
D) Geology
Which type of selection favors the intermediate phenotype?
A- Normal Distribution
B- Directional Selection
C- Stabilizing Selection
D- Disruptive Selection
C- Stabilizing Selection
The movement of alleles between populations:
A- Alleles
B- Gene Flow
C- Genetic Drift
D- Sexual Reproduction
B- Gene Flow
Remnants of organs or structures that had a function in an early ancestor are called...
A- Homologous structures
B- Vestigial structures
C- Analogous structures
B- Vestigial structures
A group of organisms that can reproduce and have fertile offspring is a...
A- Species
B- Population
C- Family
D- Group
A- Species
Which type of extinction usually affects only a few species in a small area, and is often caused by local changes in environment?
A- Mass extinction
B- Gradual extinction
C- Local extinction
D- Background extinction
D- Background extinction
In a population of spiders that were hunted by sparrows, the large spiders were easy to spot but moved very quickly; the small spiders were not very easy to spot, and the average size spiders were easier to spot than the small ones, but moved more slowly than the large ones, thus making them the most hunted. Which of the following describes this scenario?
A) Normal Distribution
B) Directional Selection
C) Disruptive Selection
D) Stabilizing Selection
C) Disruptive Selection
Genetic drift, such as the bottleneck effect ...
A- Increases genetic diversity in a population
B- Decreases genetic diversity in a population
C- Increases population numbers
D- Decreases population numbers
B- Decreases genetic diversity
When two or more species evolve together, their evolutionary paths become connected and species evolve in response to changes in each other. This is called...
A) Convergent Evolution
B) Divergent Evolution
C) Coevolution
D)Speciation
C) Coevolution
All the individuals of the same species that live within a given environment.
A- Species
B- Population
C- Ecosystem
D- Group
B- Population
This type of event occurs when a few individuals start a new population:
A- Bottleneck effect
B- Mass extinction
C- Gene flow
D- Founder effect
D- Founder effect
A population of arctic hares burrows into the snow for shelter. Hares on the smaller side can burrow between rocks, providing extra protection from predators. Over time, the hare population becomes smaller in size. Which of the following describes this scenario?
A) Normal Distribution
B) Directional Selection
C) Disruptive Selection
D) Stabilizing Selection
B) Directional Selection
Which theory of geologic change claims that geologic changes resulted from slow and gradual events that took place over long periods of time?
A- Catastrophism
B- Uniformitarianism
C- Gradualism
D- Canyonism
C- Gradualism
Structures that have a similar function, but are not evidence of a common ancestor are called...
A- Analogous structures
B- Homologous structures
C- Vestigial structures
A- Analagous structures
When organisms are better adapted to their environment they will survive and reproduce more successfully than organisms less adapted. This process is called what?
A- Adaptation
B- Evolution
C- Selective Breeding
D- Natural Selection
D- Natural Selection
Lions are fast in order to catch and eat zebras. Therefore, zebras longer legs and more powerful muscles to run faster. In response, lions evolved to run even faster. This example illustrates which of the following relationships?
A) Convergent Evolution
B) Divergent Evolution
C) Competitive Coevolution
D) Beneficial Coevolution
C) Competitive Coevolution
Which type of selection favors both extreme phenotypes?
Disruptive Selection
Competition among males (such as male deer fighting each other with their antlers) is called...
A- Intersexual Selection
B- Intrasexual Selection
B- Intrasexual Selection
Which theory of geologic change says that events like earthquakes and volcanos cause species to become extinct?
Catastrophism
A researcher estimates there are 76 raccoons living in Buffalo Creek Park. This measurement is an example of which key term?
Population
Language and tool use evolved as hominid species developed ____ jaws and ____ brains.
smaller jaws / larger brains