Evolution Phylogeny

study of the diversity of life and the evolutionary relationships between organisms

• Taxon

•  Binomial nomenclature

• Systematics

•  Endosymbiotic theory

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Presence of differences in sequences of genes between the organisms of a species

• Speciation

• Chemical Evolution

• Genetic Variation

• Organic Evolution

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formation of a new species

• Speciaiton

• Organic Evolution

• Evoltution

• Clade

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 is a plant, lichens, and algae

•  Vestigial Structures

•  Systematics

•  Aerobic heterotroph

• Photosynthetic autotroph

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Define ancestor.

• displays evolutionary relationships among living species and their ancestors

• an inherited trait that helps an organism survive

• historical sequence of life on earth based on the fossil record

• an organism from which others have descended

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Which of these describe "evolution"? Check all that apply.

• the process of how organisms adapt over time

• inherited traits that help an organism survive

• body structures with the same origin that do not perform the same function

• historical sequence of life on earth based on fossils

• changes in allele frequency over time

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A phylogenetic tree, or cladogram, shows

• the habitats organisms live in

• competition for resources

• observations of behavior

• similarities and differences in body structures

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Scientists use the following to determine evolutionary relationships in organisms (check all that apply)

• DNA

• Body Structures

• Fossils

• Behavior

• Location

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Define "Transitional Fossil"

• Fossils of organisms that show the intermediate states between an ancestral form and that of its descendants

• Fossils that show the behavior of organisms

• Fossils used to determine the geologic age of rocks

• The mineralized impression of the organism left in the sediment

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What is an adaptation?

• the process of how organisms acquire adaptations over time

• a change or the process of change by which an organism or species becomes better suited to its environment; an inherited trait

• an organism from which others have descended

• displays evolutionary relationships among living species and their ancestors

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