What finger of evolution is defined as when individuals in a population are not equal, some are better adapted and more likely to survive and reproduce
Thumb - Natural Selection
The maximum number of individuals of a species that an ecosystem can support is defined as
Carrying capacity
This occurs when the probability that two individuals in a population will mate is not the same for all possible pairs of individuals
Ring finger - nonrandom mating
A parasite is introduced into the population that feeds on and eventually kills all humans with blood EXCEPT O+ blood. What type of genetic drift is described here?
Bottleneck effect
Organisms moving IN to a population is defined as:
Immigration
True/False: Mutations are not a true source of genetic variation with a population because we have knowledge of how, when, and why they will occur
False
Individuals or organisms moving OUT of a population is known as:
Emmigration (gene flow)
Because of ______________________, each ecosystem has a limited capacity for growth connected to its carrying capacity
Limiting Factors
As the prey population _________________, the predator population increases.
Increases
A random change in an organism's genetic makeup, which will influence the populations gene pool is known as:
Middle finger - mutations
This limiting factor is seen more often when a population is large and in close contact with one another
Diseases and Parasites
A predictable change in the community over time is defined as:
Ecological Sucession
An abiotic or biotic factor that restricts the number of individuals in a population is defined as a:
Limiting Factor
This limiting factor is kept at a delicate balance between two different species and two different populations
Predator-Prey Relationships
An organism using courtship behavior in order to find a preferable mate would be categorized under what finger of evolution?
Ring finger - nonrandom mating
Which limiting factor is missing from the following list: Predators, Available habitat, Weather, Diseases and parasites, competition
Fire
When a small sample of a population begin a new population in a location separated from the original population it is known as what type of genetic drift?
Founders effect
A change in the frequency of an allele within a population over time is defined as:
Genetic Drift - pinky finger
In what limiting factor do humans play the largest role in influencing?
Available Habitat
Any movement of individuals, and/or the genetic material they carry, from one population to another is known as:
Pointer finger - gene flow
Will smaller populations result in MORE or LESS spread of parasites and disease?
Less
An event that causes a population to suddenly decline to a very low number is defined as:
Genetic Drift - Bottleneck Effect
When migrating individuals breed with a new population and contribute their genes to the gene pool of the local population it is known as:
Pointer finger - gene flow
Storms, Drought, Flooding, Extreme heat/cold, are examples of what type of limiting factor?
Weather
True/False: Because of limiting factors, the number of organisms in a population is often well below carrying capacity.
True
Name the five mechanisms (the 5 fingers) of evolution WITHOUT looking at your study guide/notes