Bio Evolution Vocab
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| complementary base pairing | either of the nucleotide bases linked by a hydrogen bond on opposite strands of DNA
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| convergent evolution | organisms not closely related, independently evolve similar traits as a result of having to adapt to similar environments
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| divergent evolution | is the process of tracing back two or more species to their common ancestor.
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| deoxyribonucleic acid | a self-replicating material present in nearly all living organisms as the main constituent of chromosomes
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| double helix | a pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule.
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| evolutionary change | a gradual change in the characteristics of a population of animals or plants over successive generations
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| gene flow | is the transfer of alleles or genes from one population to another.
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| genetic drift | variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce
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| gradual change model | species are generally morpholgically stable, changing little for millions of years.
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| mutation, natural selection | is the differential survival and reproduction of individuals due to differences in phenotype
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| nitrogenous base | a nitrogen-containing molecule that has the same chemical properties as a base
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| non-random mating | occurs when the probability that two individuals in a population will mate is not the same for all possible pairs of individuals.
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| punctuated equilibrium model | The theory that new species evolve suddenly over brief periods of time, followed by longer periods during which there is no genetic change
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| speciation | the formation of new and distinct species in the course of evolution.
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| sugar-phosphate backbone | forms the structural framework of nucleic acids, including DNA and RNA
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