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Evolution Vocabulary Practice
ch 27 bio test vocab list
18
Biology
12th Grade
02/27/2008

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Term
Natural Selection
Definition
process by which populations become adapted to their environment
Term
adaptations
Definition
organism suited to an environment so it thrives
Term
analogous structure
Definition
structures that have a similar function in different ancestry and differ in structure
Term
speciation
Definition
new species over time
Term
comparative biochemistry
Definition
different species organisms have similar DNA
Term
species
Definition
population members able to mate and produce fertile offspring
Term
Darwin
Definition
fit animals out compete the less fit
Term
wallace
Definition
species create species
Term
evolution
Definition
changes that occur in the members of a species over time
Term
finches on the galapagos islands
Definition
geographically isolated
Term
fossil
Definition
past evidence of living organism encrusted in earth
Term
genus
Definition
the first word in the binomial naming system
Term
homologous structure
Definition
is similar in two or more species because of common ancestry
Term
binomial classification
Definition
each species has 2 names
Term
mutations
Definition
deletion, insertion, etc
Term
speciation gradualism
Definition
occurs gradually in unbranched lineage
Term
speciation punctuated
Definition
periods of rapid change dependent on speciation followed by long periods of stasis
Term
environment
Definition
everything that surrounds a particular organism
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