Ch15:16 - Cases of Mass Extinctions -volcanic eruptions...

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Cases of Mass Extinctions -volcanic eruptions (Paramecium) -Difference in temperature or oceans -Meteor light colliding with earth (cretaceous) -iridium layer in geologic record Adaptive Radiation -periods of evolutionary change -many new species form -adaptations allow them to fill new habits or community role Gradual refinement -evolution of eyes developed in small steps of adaptions -feathers of birds evolved as adaptions for flight or insulation -modifications of existing structures become existing or modified Exaptation -a structure becomes existing or modified Systematic: -the discipline of biology that focuses in classifying organism and determining their evolutionary relationship 3 Domains : Bacteria, Eukarya, Archae -king Philip came over for good spaghetti Molecular Systematic -compares DNA, RNA to average species into clades -rRNA can be used to analyze texa that diverge MYA (ex: fungi, humans) -mtDNA can be used to investigate relationships b/w recent population -entire genomes of different species can be prepared
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Ch15:16 - Cases of Mass Extinctions -volcanic eruptions...

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