History of Earth/Radiometric Dating
Natural Selection and Evidence of Evolution
Speciation and Types of Selection
Genetic Drift and Genetic Equilibrium
Unit 5 Random
100

This layer of Earth contains the convection currents that drive the movement of lithospheric tectonic plates.

What is the mantle?

100

This is defined as the reproductive success of an individual in evolution.

What is fitness?

100

This type of reproductive isolation occurs when two populations are separated by a physical barrier and are unable to mate and reproduce.

What is geological/geographical/geographic isolation?

100

This occurs when there is a change in allele frequency as a result of migration, usually decreasing the genetic diversity of the population.

What is the founder effect?

100

This layer of Earth contains the tectonic plates.

What is the lithosphere?

200

This is the amount of time it takes for half of the radioactive substance to decay.

What is half-life?
200

These are inherited traits that allow an individual to better survive in a specific environment.

What are adaptations?

200

This term refers to the formation of new species.

What is speciation?

200

This occurs when change in allele frequencies occur as a result of a drastic reduction in the size of a population, usually lowering the genetic diversity of the population.

What is bottleneck effect?

200
The sliding of tectonic plates in opposite directions at this plate boundary triggers earthquakes (just like the one in San Diego yesterday!).

What are transform plate boundaries?

300

This is the process that involves the movement of sediment as they are carried away by wind, water, or ice.

What is erosion?

300

This can occur between individuals of the same species or individuals of different species when there is limited food and space available in a habitat.

What is competition?

300

This type of reproductive isolation occurs when two populations reproduce at different times and are unable to mate and create viable and fertile offspring during the same time of the year.

What is temporal isolation?

300

This typically results in an increase in genetic diversity of a population due to the transfer of genetic material between different populations of the same species.

What is gene flow?

300

This is the term to describe different versions of traits that are inherited genetically in theory of evolution by natural selection.

What are variations?

400

This is the process that occurs when small particles reach a larger body of water and are placed at the bottom, forming layers of sediment.

What is deposition?

400

These are structures in different organisms that share the same function but do not share the same ancestry or structure and development.

What are analogous structures?

400

This type of selection occurs when the intermediate phenotype is favored over both extreme phenotypes, resulting in increased survivability and fitness for individuals with the intermediate phenotype.

What is stabilizing selection?

400

This is the frequency of the recessive allele in a population if 16% of the population have the recessive trait.

What is 0.4?

400

This is how much of the 60.0 gram original sample that remains if two half-lives have occurred.

What is 15.0 grams?

500

Subduction zones (where one tectonic plate goes under another) are found at these tectonic plate boundaries.

What are convergent plate boundaries?

500

This type of evolution occurs when two or more species affect each other's evolution, such as symbiotic relationships between a flower and a pollinator or relationship between a predator and prey as both establish attack and defense mechanisms.

What is coevolution?
500

This type of selection occurs when one extreme is selected over another.

What is directional selection?

500

This is the frequency of the dominant allele if 9 individuals in a population of 100 have the recessive trait.

What is 0.7?

500

This term describes determining the age of different rocks by using the fossil record and rock layers.

What is relative dating?

600

This is the percentage of the original substance that remains after 4 half-lives have occurred.

What is 6.25%?

600

These are structures that do not serve important functions in organisms so they are no longer being used.

What are vestigial structures?

600

This type of reproductive isolation occurs when two populations of species evolve differences in mating rituals and courtship routines and are no longer able to mate and reproduce.

What is behavioral isolation?

600

These are the equations that hold true based on the Hardy-Weinberg principle when a population is Hardy-Weinberg equilibrium.

What are p + q = 1 and p2 + 2pq + q2 = 1?

600

These are the five conditions that need to occur in order for a population to be in genetic equilibrium.

What are...

1. Random Mating

2. Large Population Size

3. NO Gene Flow (no migration)

4. NO Mutations

5. NO Natural Selection

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