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17 Cards in this Set
- Front
- Back
analogous structures
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an analogous structure in one species that is similar in function and apperance but not in evoultionary orgin to another anatomical structure in another species
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biogeography
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the srudy of the geographical distrubution of living orgganisms and fossils on earth
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cladogram
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a diagram that is based on patterns of shared derived traits and that shows the evolutionary relationships between groups of organisms
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common ancestor
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any person to whom to or more persons claim decent also the most revent ancestral form or species from which two species evolved
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embryology
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study of embryos and their development
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empirical evidence
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based on, concerned with or verafiable by observation or experience rather that theory or pure logic
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evolution
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a heritable change in the charateristics within a population from one generation to the next the development of new types of organisms from preexisting types of organisms overtime
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fossil
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the trace or remains of an organism that lived long ago most commonly preserved in sedimentary rock
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In science an idea explanation that is based on observations that can be tested |
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Fossil record |
Total number of fossils that have been discovered as well as to the information derived from them |
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Homologous structures |
Anatomical structures in one species compared to other is anatomical structures and another species originated from a single anatomical structure in a common ancestor of the two species |
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Index fossil |
A fossil is useful for dating and correlating the strata and which it is found |
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Mitochondrial DNA |
An extra nuclear double stranded DNA found exclusively in mitochondria |
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Phylogenetic tree |
A diagram that shows inferred evolutionary relationships among various biological species |
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Theory |
An explanation for some phenomenon that is based on observation experimentation and reasoning that is |
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Transitional fossils |
Any fossilized remains of a life-form that exhibits traits common to both ancestral groups and it's derived ascendant group |
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Vestigial organ |
A vitamin Terry structure and humans corresponding to a functional structure or organ in ancestral animals |