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BIO CH 23
Systematics and the Phylogenetic Revolution
| Question | Answer |
|---|---|
| ALL ORGANISMS | ARE COMPOSED OF CELLS CARRY OUT METABOLISM TRANSFER ENERGY W/ APT ENCODE HEREDITARY INFORMATION IN DNA |
| TREMENDOUS DIVERSITY OF LIFE | BACTERIA WHALES SEQUOIA TREES |
| BIOLOGISTS GROUP ORGANISMS BASED ON? | SHARED CHARACTERISTICS |
| SCIENTISTS RELY ON OTHER TYPES OF EVIDENCE TO ESTABLISH THE BEST? | HYPOTHESIS OF EVOLUTIONARY RELATIONSHIPS |
| SYSTEMATICS IS? | THE STUDY OF EVOLUTIONARY RELATIONSHIPS |
| PHYLOGENY IS? | A HYPOTHESIS ABOUT PATTERNS OF RELATIONSHIP AMONG SPECIES |
| WHAT DID DARWIN ENVISION? | THAT ALL SPECIES WERE DESCENDED FROM A SINGLE COMMON ANCESTOR |
| HE DEPICTED THE HISTORY OF LIFE AS? | A BRANCHING TREE, ALSO CALLED A CLADOGRAM |
| IN THE CLADOGRAM, THE TWIGS OF A TREE REPRESENT: | EXISTING SPECIES |
| IN THE CLADOGRAM, THE JOINING OF TWIGS AND BRANCHES REPRESENTS: | THE PATTERN OF COMMON ANCESTRY BACK IN TIME TO A SINGLE COMMON ANCESTOR |
| WHAT DID DARWIN CALL THIS PROCESS? | "DESCENT WITH MODIFICATION" |
| PHYLOGENIES DEPICT: | EVOLUTIONARY RELATIONSHIP |
| THE KEY TO INTERPRETING A PHYLOGENY IS: | LOOKING AT HOW RECENTLY SPECIES SHARE A COMMON ANCESTOR |
| SIMILARITY MAY NOT ACCURATELY PREDICT WHAT? | EVOLUTIONARY RELATIONSHIPS |
| EVOLUTION CAN OCCUR RAPIDLY AT ONCE AND SLOWLY AT ANOTHER. KNOWN AS: | PUNCTUATED AND GRADUAL EVOLUTION |
| OSCILLATING SELECTION IS: | TRAITS THAT CAN EVOLVE IN ONE DIRECTION, THEN BACK THE OTHER WAY |
| CONVERGENT EVOLUTION IS | EVOLUTION THAT IS NOT ALWAYS DIVERGENT |
| CONVERGENT EVOLUTION MEANS THAT SPECIES SHARE: | SIMILAR HABITATS AND SIMILAR ENVIRONMENTAL PRESSURES |
| EVOLUTIONARY REVERSAL IS: | A PROCESS IN WHICH A SPECIES RE-EVOLVES THE CHARACTERISTICS OF AN ANCESTRAL SPECIES |
| DERIVED CHARACTERISTICS ARE | A SIMILARITY THAT IS INHERITED FROM THE MOST RECENT COMMON ANCESTOR OF AN ENTIRE GROUP |
| THE TERM ANCESTRAL MEANS: | A SIMILARITY THAT AROSE PRIOR TO THE COMMON ANCESTOR OF THE GROUP |
| IN CLADISTICS, WHAT IS CONSIDERED INFORMATIVE ABOUT EVOLUTIONARY RELATIONSHIPS? | ONLY SHARED DERIVED CHARACTERS |
| CHARACTER VARIATION MUST BE IDENTIFIED AS ANCESTRAL OR DERIVED TO USE: | THE CLADISTIC METHOD |
| 4 CHARACTERS THAT CAN VARY ANY ASPECT OF THE PHENOTYPE ARE: | MORPHOLOGY, BEHAVIOR, PHYSIOLOGY, DNA |
Created by:
dscott4
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