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Concepts of Evolution Flashcards

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594498914HuttonSaid that layers of rock are formed by earth's movement. And the hint of rain and temperature give the formations we see.
594498915LyellPast events that still occur till these days: uniformitarianism
594498916Structure of the EarthDeduced from the action resulted by an earthquake.
594498917Primary Waves Secondary WavesTravel through any material Only travel through solids
594498918CoreComposed by inner and nickel
594498919Inner CoreThe high temperature could reach the liquid state but a big pressure keeps it solid.
594498920Outer CoreLess pressure, therefore is liquid. Can travel, producing earth's magnetic field.
594498921MantleThe largest layer. Really hot. Defined as plastic
594498922AsthenosphereMore plastic than the rest of the upper mantle because it contains liquid (plastic)from the lower mantle
594498923LithosphereFrom the mantle to the crate. It's rigid and broken up into plates
594498924CrustUppermost part of the lithosphere
594498925Oceanic CrustThe denser part of the Crust because it is so compact. Also called basalt
594498926Continental CrustMost above sea level. Lower density
594498927Plate tectonicsHas caused the creation of large scales on the earth
594498928Divergent Plate BoundaryAlso known as spreading centers because it's where new cross is formed. Plates move toward divergent (opposite) directions
594498929Convergent Plate BoundaryPlates move toward convergent (the same) directions
594498930Oceanic-oceanic convergenceOne plate slide under another. Form volcanos under the water that can become islands
594498931Oceanic-continental convergenceThe oceanic plate will slide under the continental plate. Form continental volcanos.
594498932Continental-continental convergenceSmall amount of subduction because the plates have the same density. The plates collide and mountains occur.
594498933Transform BoundariesPlates slide past each other
594498934Continental Drift - WegnerPurposed that the continents used to be together and formed a large continent called pangea. Theory not really accepted because Wegner did not have the mechanisms to prove it.
594498935Seafloor Spreading - HessNoticed polarities on the sea floor. The different polarities altern and this is important because provides the mechanism for continental drift
594498936LamarckTheory of use and disuse. All species have tendency toward complecity and perfection. Some organisms will become prominent by use and disuse Organ system that allows survivement and reproduction and can be passed to the offspring Theory proved wrong because acquired characteristics can't be passed to offspring
594498937MalthusRealized that human grows more than dies and only catastrophic events could stop it
594498938Theory of EvolutionTheory made by Darwin after his trip awound the world
594498939Obs #1All populations would grow exponentially if all individuals reproduced successfully
594498940Obs #2Populations tend to be stable except for when the season changes and they migrate
594498941Obs #3Resources are limited
594498942Interference #1More individuals than the environment can support causes a struggle for surviving among the population and only some survive
594498943Obs #4Individuals of a populations change their characteristics. No individuals are exactly alike.
594498944Obs #5Much of the variation in heritable
594498945Interference #2Individuals whose inherited high traits have more chances to leave more offspring than others
594498946Interference #3The differences among individuals will lead to a change among the population. They can leave good characteristics accumulating over generations.
594498947Natural SelectionOrganisms take over a habitat, fill the niches, change with each generation and the last allows them to take more adventages over the habitat.
594498948Called adaptationsSpecies are thought to have descended with changes of other species
594498949Artificial SelectionHumans modify individuals according to what they want to produce. This is not a natural change, is ARTIFICIAL
594498950Fossil RecordFossils found in layers of rocks are proof of change over time
594498951Geographic DistributionOr biogeographic. Found that animals in different continents had the same behaviors and body structures. According to him, it was the environment that adapted these animals to the behaviors and bodies.
594498952Analogous StructuresThe same functions of biogeography (animals adapted to behaviors and body structures by the environment and pressures of natural selection)
594498953Homologous StructuresIndividuals with different form and function but constructed by the same basic bones. Ex: four-limbed creatures with back bones come from the same ancestors
594498954Similarities in early developmentVertebrates that look the same. Evolutionists believe that the common cells and tissues, that grow in similar ways, are a proof of homologous structures and so are a proof of evolution
594498955Patterns of EvolutionIs the evolutionary changes that take place over a lonmg period of time.
594498956Mass ExtinctionsA huge number of species disappearing really fast and ecosystems wiped out, what causes the disruption of energy flow and the collapse of food webs
594498957K-T BoundaryA layer of clay around the whole world that has a concentration of an element that does not occur is earth, it occured when we had the dinosaurs' extinction
594498958Adaptie RadiationWhen some species take adventages over a niche and developt adaptions to better explore it.
594498959Evolution ModalitiesThree ways of evolution that produce analogous structures
594498960Divergent EvolutionAn ancestral species that changes overtime
594498961Converging EvolutionCompletely different environments that apply the same pressure and so create individuals similiar to each other
594498962Parallel EvolutionAlso lives to analogous structures
594498963Co-EvolutionProcess by which two species evolve and respond to changes over time
594498964Gene for Gene ResistanceEx: AVR: the disease R: the resistance - immune the receptor (can protect from AVR)
594498965Punctuated EquilibriumRapped evolution that occurs after a period of no evolution. It's not gradualism, species do not evolve gradually
594498966Mutation in Developmental GenesGenes called HOX specify the body plan. Changes in these genes could produce a new body plan
594498967Speciation ISpecies are a group of organisms that can interbreed and produce fertile offspring. Population is a group of individuals from the same species in one location. Gene pool is the combined info of all member of a pop. Evolution is complete when two species can no more produce viable offspring.
594498968Speciation IITwo species reproductively isolated from each other
594498969Pre-zigoticSpeciation that occurs before the zygote is formed
594498970Behavioral IsolationAre able to produce fertile offspring but because of their different mating habits, they dont mate and therefore are reproductively isolated
594498971Geographic IsolationOr habitat isolation. Two populations separated by geography so they do not mate.
594498972Temporal IsolationAre phiscally able to mate but are fertile at distinct times
594498973Mechanical IsolationThey do not match
594498974Non Viability of the EmbryoHas so many genetic problems that the embryo dies as soon as it gets formed
594498975Sterility of the OffspringCan be produced and have a healthy life, but it can not produce offspring.
594498976MicroevolutionChange in a an allele frequencies over time
594498977Genetic driftA change in a population allele frequencies do to chances
594498978Bottleneck effectDrastic reduction in population size
594498979Founder effectFormation of a new colony
594498980Natural SelectionAccumulation and maintaing favorable genotypes in a pop. Due to diffrential success and reproduction and acts on phenotypes
594498981Single Gene TraitsA single gene produces a phenotype that can be EITHER: for or against.
594498982Polygenic TraitsProduced by more than one gene. Represented by Bell Curve.
594498983Directional SelectionOne extreme of the population (curve) is selected against
594498984Stabilizing SelectionTwo extremes are selected against, what results in more of the average.
594498985DisruptedThe average (middle) is selected against and the extremes live to fight again.
594498986Gene flowA change in allele frequences caused by a migration of fertille individuals into or out for a population
594498987MutationChange in organisms' DNA. To affect the population in must occur in a gamete and this gamete must be used to create another individual
594498988Hardy-Weinberg TheoremPopulation that is not evolving. 5 causes? Random mating Population must be large No gene flow No net mutation of alleles Natural selection not acting on individuals
594498989HardyEquations used to calculate genetic frequencies of a population.
594498990BB - 1st B dominant allele - P Bb bb - 1st B recessive allele - QHomozygous dominant Heterozygous Homozygous recessive
594498991P+Q=1To calculate allele frequencies ex: P = 0.8 Q=? Q=0.2
594498992P2+2PQ+Q2=1To calculate genotypic frequencies

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