\-domain is the broadest and species most specific
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What is a anangram to remember binomial nomenclature?
Danish King Philip Came Over for Spaghetti
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What is binomial nomenclature?
\n -The two-part scientific naming system includes the organism’s Genus (Capitalized and italicized or underlined) and species (lower case and italicized or underlined). \n -The Genus is Capitalized and italicized (or underlined if handwritten) \n - The species is lower case and italicized (or underlined if handwritten).
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What is dichotomous key?
a branched or stepped process that use observable characteristics to identify an organism
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How many choices at each step of dichotomous key?
only 2
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What does a cladogram show?
the most probable sequence of divergence
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Where are shared characteristics used in a cladogram?
between nodes (like a dichotomous keyP
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What are homologous traits due to?
divergent evolution form a common ancestor (aka adpative radiation)
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What are homologous traits?
similar structures but different function
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What are examples of homologous traits?
\-bat wings, whale fins, our arms
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Can homologous traits be used for cladograms?
yes
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What are analogous traits due to?
convert evolution from different ancestors?
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What are analogous traits?
similar function but different structure
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What are examples of analogous traits?
Bird wings and insect wings, shark fins & whale flippers
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Can analogous traits be used for caladogram?
no
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What is a clade?
a group of organisms that have evolved from a common ancestor (alive or extinct)
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What do clades do?
\-Compare primitive traits (those which evolved early on) \n to derived traits (evolved more recently as modifications \n of a previous trait)
\-There is a positive correlation between the number of \n differences between two species and the time since they \n evolved from a common ancesto
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What can clades use for comparison?
physical traits, DNA base sequences, amino acid \n sequences (because anatomical features can be \n analogous – they are now rarely used – DNA & a.a. \n sequences are preferred
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What is the figwort family (snapdragon family)?
\-Now divided into at least six
-Flower shape is convergent evolution – adapted to same types of pollinators
\-Cladistics using genetics helped to split this group up