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Taxonomy

Taxonomy. [Pronounced: Tax–on–oh–me]. Activity… In pairs, devise [create] a system for identifying and classifying the alien organism cards. Make sure to explain your classification [sorting] method. Be prepared to share with the class …Why did I have you do this???. Taxonomy.

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Taxonomy

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  1. Taxonomy [Pronounced: Tax–on–oh–me] • Activity… • In pairs, devise [create] a system for identifying and classifying the alien organism cards. • Make sure to explain your classification [sorting] method. • Be prepared to share with the class • …Why did I have you do this???

  2. Taxonomy [Pronounced: Tax–on–oh–me] The field of biology that identifies and classifiesorganisms [a way to group organisms] Taxonomists analyze shared characteristics to determine evolutionary relationships

  3. [Pronounced: Tax – on – oh – me] Taxonomy • Biological classification systems group the most • closely related organisms together

  4. Data: Methods of Classification 1. Structure - Homologous structures 2. Fossil Record 3. Molecular Biology - DNA / RNA comparisons - Amino acid sequence in proteins A T G C

  5. Phylogenetic Tree [Pronounced: Phy – lo – ge – net – ic] Shows the evolutionary relationshipsamong organisms throughout history More distant ancestors appear at the base More recent relatives make up the branches

  6. Checking 4 Understanding Taxonomy is the science of ________.    A.    categorizing dissecting instruments. B.    classifying and naming organisms. C.    classifying insects in a single rain-forest tree. D.    maximizing tax deductions for field-research expenses

  7. In Space, No one can hear you… Attention Men in Black, I need your help identifying & classifying the alien creatures that escaped MIB headquarters. • Expectations: • Work as a team to identify & classifyat least 10 aliens. • Use the dichotomous key to assist you in the identification & classification process.

  8. Dichotomous Key [Pronounced: Di – kot – uh – muhs] • -Is a tool used for identifying organisms (a biological key) • -Lists specific observable traits. • -Think of it like a scavenger hunt [if you’ve ever done one] 1a …Has feathers go to 2 1b … no feathers go to 3 2a swims… duck 2b does not swim…hen 3a has legs … lizard 3b no legs … snake OR

  9. Checking 4 Understanding A dichotomouskey is used toa. locate an object / organismb. identify an object / organismc. divide an object / kingdomd. interbreed an object / species

  10. Academic Vocabulary Review • Old Words… • Evolution • Organisms • Fossil Record • Biomolecules • DNA • RNA • Amino Acid • Protein • Homologous structures New Words… • Taxonomy • Phylogenetic Tree • Dichotomous Key

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