Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
50 Cards in this Set
- Front
- Back
|
Describe the law of superposition.
|
The layers of sediment were layered ontop of each other, by wind or water. The lower level is old, top layer is younger.
|
|
|
Three types of fossils
|
Sediment
Mold Cast |
|
|
Difference between relative and absolute age.
|
Relative - Only knowing if the fossil is younger or old than other fossils.
Absolute - This is done by radioactive dating. Finding the exact age. |
|
|
Who though that trait acquired by one generation were passed onto the next generation.
|
Lemark.
|
|
|
Process that drives evolution.
|
Natural selection.
|
|
|
Change in the genetic makeup of a population
|
Evolution.
|
|
|
Single organisms genetic contribution to the next generation.
|
Fitness
|
|
|
Features that have the same function in different species but come from different part of the embryo during development.
|
Analougous
|
|
|
Features that may have different functions in defferent species but come from the same part of the embryo during development. They share a common ancestor.
|
Homolougous
|
|
|
Features that are apparently useless, but were once useful in an ancestor.
|
Vestgal
|
|
|
Type of evoltuion where related species become increasing different. Adaptive radiation of Darwins finches is an example.
|
Divergent
|
|
|
Type of evolution where unrelated species become increasingly similar. Dolphins and sharks are an example.
|
Convergent
|
|
|
Type of evoltuion where one species evolves in response to the other.
|
Coevolution
|
|
|
All living things come from other living things.
|
Bio genesis.
|
|
|
Theory that living things could arise form nonliving things.
|
Spontangeous Genertion
|
|
|
Spallanzani's experiment.
|
Meat in the jar with cloth over it.
|
|
|
Redi's Experiment
|
He used curved neck flasks but not open neck which prevented microorganisms from entering.
|
|
|
What life like properties do coacervates and microspheres possess?
|
They can take up certain substances from their soundings, coavercates can grow, microspoheres can bud from smaller microspheres.
|
|
|
The form of RNA that acts like an enzyme is called a _____
|
Ribozyme.
|
|
|
Population genetics
|
Study of evolution from a genetic point of view.
|
|
|
Bell Curve
|
Shows how there is less extream traits and more average.
|
|
|
Phenotype Frequency
|
Ratio stating the number of times a specific phenotype occurs in a population in a single generation.
|
|
|
Hardy-Weinberg Genetic equilibrium
|
The stability of gene frequencies across generations.
|
|
|
5 steps to Hardy Weinberg Genetic Equilibrium
|
1. No net mutations occur
2. Individuals neither enter nor leave the popuation. 3. The population is large. 4. Individuals mate randomly. 5. Selection does not occur. |
|
|
Immigration
|
The movement of individuals into a population.
|
|
|
Emigration
|
The movement of individuals out of a population.
|
|
|
Gene Flow
|
Movement of genes from one population to another.
|
|
|
Genetic Drift
|
Is when allele frequencies change to random events.
|
|
|
Random Mating
|
Mating occurring without genetic make up.
|
|
|
Associative mating
|
Mating is based on similarities of characteristics.
|
|
|
Stabilizing selection
|
Individual with the average form of a trait have the highest fitness.
|
|
|
Directional selection
|
The display of a more extreame form of a trait have greater fitness that individuals with an average form of the trait.
|
|
|
Sexual Selection
|
Choosing a mate based on certain traits.
|
|
|
Speciation
|
The process of species formation
|
|
|
Morphology
|
The internal and external structure and appearance of an organism.
|
|
|
Biological species concept
|
The principles that defines a species as those organisms that can produce offspring together.
|
|
|
Geographic isolation
|
Physical separation of members of a population.
|
|
|
Reproductive isolation
|
The inability of formerly interbreeding organisms to produce offspring.
|
|
|
Punctuated equilibrium
|
A theory that specifies occurs durning brief periods of rapid genetic change.
|
|
|
Radioactive Dating
|
A method of determining the age of an object by measuring the amount of specific radioactive isotope it contains.
|
|
|
Acquired trait
|
One that is not determined by genes.
|
|
|
Endymbiosis
|
Mutually benifically relationship between one organism and another that lives within it.
|
|
|
Desent with modification
|
States that newer forms appearing in the fossil record are acturally the modified desendants of older speices.
|
|
|
Natural selection
|
Organisms best suited to their environment reproduce more successfully than other organism.
|
|
|
Bell Curve
|
Shows how there is less extream traits and more average.
|
|
|
Punctuated equilibrium
|
A theory that specifies occurs durning brief periods of rapid genetic change.
|
|
|
Miller and Urey Apparatus
|
Modeled the atomoshpheric and temperature conditions of early earth. Produced a variety of organic compounds.
|
|
|
Uniformitarianism
|
Geological strcutre of Earth resulted from cycle of observable processes and these continue through time.
|
|
|
Microsphere
|
Sphereical in shape and are composed of proteins
|
|
|
Coacervates
|
Collections of droplets that are composed of molecules of different types including amino acids and sugars.
|
