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Monster Media 1996 #15
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Monster Media Number 15 (Monster Media)(July 1996).ISO
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vocab211.zip
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EVOLUT.DAT
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evolution a gradual change in the genetics of a population
fitness the traits and behaviors that help an organism to survive
adaptation any trait that increases an organism's fitness in an environment
fossil preserved remains of a living thing
sedimentary rockrock that forms layers of different ages
strata the layers in sedimentary rock
relative dating a method used to compare the age of one fossil with another
half-life the time for a half of a radioactive material to decay
absolute dating a method to determine the actual age of a fossil
era a large period of geologic history
period a period of geologic history that is part of an era
epoch a period of geologic history that is part of a period
embryo a living thing at an early stage of its development
homologous structures that are similar in structure but have different jobs
vestigial organ an organ that serves no useful purpose (appendix)
acquired traits characteristics that an individual acquires during its life
artific. select.the picking by humans of the individuals that will survive
natural selectn.nature determining which individuals will survive
use and disuse theory that if you used an organ it would improve or change it
fittest the best suited to live in a particular environment
gene pool the common group of genes in a population
species a group of similar organims that can interbreed
niche the role of a living thing in its environent
repro. isolationthe separation of a population into two groups
adaptive radiatnone species gives rise to many species
divergent evol'nanother name for adaptive radiation
convergent evolnevolution producing species that are similar to one another
analogous structures similar in appearance but having different origins
genetic drift change in a gene pool by chance alone
speciation development of a species
adaptation an inherited trait that improves survival
gradualism theory that evolution occurs at a slow and steady pace
punctuated equiltheory that evolution occurs with sudden changes at times
Hardy-Weinberg law that states: gene pool does not change in certain conditions
era largest interval of time in geologic time
period part of an era
epoch part of a period
Homo sapiens the species to which we belong
Australopithecusthe first hominid fossils
hominid human or human-like species
Homo habilis a species that probably used tools
Homo erectus a species that probably stood upright
Neanderthals a species that lived about 100,000 years ago; may be H. sapien
Cromagnons group that lived 50,000 years ago; very similar to us now