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bio paper 2
classification
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Carl Linnaeus
proposed the
Linnaean system
of
classification
in the
1700s
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The Linnaean system groups
species
together according to their
characteristics
and
bone structures
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Species
are grouped into
kingdoms
, such as
plant
or
animal
, then
phylum
,
class
,
order
,
family
,
genus
, and finally
species
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The names in the Linnaean system are mostly in
Latin
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Linnaeus introduced the
binomial naming system
, where species are named by their genus and species names in
italics
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For example, humans are named
Homo sapiens
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Carl Woese
proposed the
three-domain system
in the
1990s
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The three domains are
Eukaryota
,
Bacteria
, and
Archaea
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Eukaryota
contains
organisms
with
eukaryotic cells
, such as
plants
,
fungi
,
protists
, and other
animals
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Bacteria
refers to single-celled
prokaryotic organisms
found almost everywhere
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Archaea
are a different type of
prokaryotic
cell found in
extreme
conditions like
hot springs
and
salt lakes
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Evolutionary
trees show the
evolutionary relationships
between different
species
or
groups
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They link
common ancestors
to show
relationships
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Birds
are more closely related to
Tyrannosaurus
rex than to
bats
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Bats
and
birds
are more closely related to each other than to
spiders
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Different evolutionary trees
can look quite
different
but show the
same information
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To remember the order of classification groups, use a
mnemonic
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For example, "Dear Kate, please come over for great spaghetti" represents
Domain
,
Kingdom
,
Phylum
,
Class
,
Order
,
Family
,
Genus
,
Species
View source
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