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Bio Chapter 10

Honors Biology Vocabulary

TermDefinition
Creationist Theory the theory that over 7 days of creation, the universe and all life was created by a supernatural entity (like God) in their present form no more than 6,000 - 10,000 years ago
Intelligent Design proposes that the complexity of nature supports the existence of an intelligent mind
Usher worked out the year of creation based on dates in the Bible
Lightfoot came up with 9 a.m. as the time of creation
Panspermia the idea that life on Earth originated from some extra-terrestrial source
Spontaneous Generation / Abiogenesis
Jan van Helmont a Belgian botanist who came up with a recipe for mice
Biogenesis life comes from life
Louis Pasteur showed that bacteria that spoiled wine didn't spontaneously develop in the wine bottle
Oparin Theory life could have risen spontaneously on Earth under different environmental conditions (like if there was no oxygen)
Primordial Sea an ancient sea composed of a rich mux of organic molecules
Miller & Urey created a machine that experimentally recreated the conditions of "early Earth" as described by Oparin
Evolution living organisms can change over a long period of time as a consequence of adapting to their environment
Indirect Evidence doesn't show change, but acts as support for the process
Direct Evidence process of change can be observed
Fossils the remains or traces of organisms that once lived in a previous geological time period
Paleontology the study of ancient life
Sedimentary Rock rock formed as sediments pile on top of each other & compress into rock
Bioglyphs traces left by the passing of an organism
Molds hollow impressions left behind when the original organism decayed
Cast hollow space left subsequently filled in by sediments, assuming the shape of the original organism is based on the mold
Petrified organic material turned to stone
Mineral Infiltration the slow decay of organic molecules that are replaced by minerals dissolved in ground water
Relative Dating doesn't give an exact age but only its relation to other specimens
Law of Superposition in undisturbed rock layers, older fossils are found below younger fossils
Absolute Dating determining approximate age in years by measuring known chemical/physical process that changes with time
Radiometric Dating measuring the decay of radioactive elements
Half-Life the amount of time it takes for 1/2 of the parent material to decay into the daughter material
Dendrochonology tree ring dating that is only useful in areas that have continuous tree growth over extended period of time
Pollen Dating doesn't give the age of sample (unless pollen is C-14 dated) but plant species indicate climate conditions
Molecular Clocks a method that estimates the time required for a given amount of change based on genes that show a reliable rate of change (change in nucleotide sequences) graphed against dates known in fossil record
Theory of Recapitulation an organism's embryonic development repeats its evolutionary history
Comparative Embryology the more 2 organisms have in common in embryonic development, the more closely related they are
Vestal Organs the atrophied remains of organs that are currently no longer, but were used by the organism's ancestors
Atrophied shriveled up
Homologous Organs when different organisms possess organs that are similar in structure but have been modified to different functions
Analogous Organs organs that have different structure but similar function
Industrial Melanism change in an organism's color due to the effects of the industrial revolution
Resistance organisms becoming immune to chemicals used to control them
Sexual Dimorphism the display of different colors, shapes, or sizes based on sex of organnism
Modern Synthesis convergence of several lines of biological research into a unified theory
Created by: Akosssua
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