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Evolution Unit

QuestionAnswer
variation differences in members of the same species
molecular clock scale of protein change
half-life time it takes for half of a radioactive element to decay
fossil imprint or remains of living things
anatomy study of the structure of organisms
adaptation change that increases an organism's chance of survival
evolution change in a species over time
fossil record most complete biological record of life on earth
homologous structures structures that evolve from similar body parts
radioactive dating method based on radioactive elements used to measure the age of fossils.
6 Evidences of Evolution Fossils, Radioactive Dating, Anatomical Evidence, Embryological Evidence, Chemical Evidence (DNA), Distribution of organisms
Examples of fossils bones, imprint of a shell/leaf, footprint, seeds, pollen grains
Examples of homologous structures dog's leg, human's arm, bat's wing, whale' fin
law of superposition In a series of sedimentaty rock layers, younger rocks are normally found on top of older rocks
Jean-Baptiste de Lamark's beliefs organisms evolve due to desire to change or use of structures
Charles Darwin's beliefs organisms evolve due to natural selection (mutations)
Natural Selection Survival of the Fittest, Those organisms best adapted to their surroundings will be more likely to survive and reproduce.
Overproduction Results Competition for food or shelter amond different members of a species
Pepper Moth Example of Natural Selection
Punctuated Equilibrium Evolution occurs in rapid and sudden changes in a species after a long period of little or no change
Gradualism evolution takes place over a long period of time (Charles Darwin)
Created by: jmebuckley
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