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AP Biology Phylogeny Vocab Flashcards

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7733821862CladeA group of species that includes an ancestral species and all of its descendants0
7733821865PhylogenyPhylogeny The evolutionary history of a species or group of species1
7733821866Phylogenetic TreeA branching diagram that shows the evolutionary tree of a group of organisms2
7733821867Derived CharacterAn evolutionary novelty that is unique to a particular clade Ex.) birds' feathers3
7733821868Monophyletic"Single tribe"; a group of taxa that consists of a common ancestor and all of its descendants; equivalent to a clade4
7733821869Polyphyletic"Many tribes"; a group of taxa derived from two or more different ancestors5
7733821870Paraphyletic"Beside the tribe"; a group of taxa that consist of a common ancestor and some, but not all of its descendants6
7733821873Homologystructures that originated from a common ancestor and have since adapted7
7733821874OutgroupA species or group of species from an evolutionary lineage that is known to have diverged before the lineage that contains the group of species being studied; Its selected so that its members are closely related to the group of species being studied, but not as closely related as any study-group members are to each other8
7733821875Analagousstructures that perform a similar function but have a different evolutionary origin, such as the wings of insects and birds.9
7733821876Homologoussimilar in position, structure, and evolutionary origin but not necessarily in function10
7733821877TaxonomyLinnaeus; A scientific discipline concerned with naming and classifying the diverse forms of life; Domain, Kingdom, Phylum, Class, Family, Genus, Species11
7733821882Domainhighest taxonomic rank of organisms (bacteria, archaea, eukaryotes)12
7733821888ArchaeaDomain (no nuclear membrane, prokaryote like Bacteria, but more closely related to Eukarya)13
7733821889EukaryaDomain (contain a membrane-bound nucleus) (this is animals and humans etc- the important one)14
7733821893Spontaneous Origin Theoryaccepted by most scientists; life developed from inanimate objects as molecules became more complex15
7733821894Miller-Urey Experiment (1953)simulated conditions of Earth's early atmosphere and tried to see if an electric spark could produce molecules (found that carbon compounds and then amino acids were created)16
7733821895RNA first Theorylife originated with a basic polymer of RNA which did the work of proteins and DNA until these molecules were produced and functioned on their own (might have started with PNA- protein nucleic acid that was able to form spontaneously and self-replicate)17
7733821897reducing atmosphereavailability of hydrogen allows organic molecules to form more easily, lack of oxygen allowed amino acids to last longer (normally would react w/ sugar and form CO2 in oxygen environment)18

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