fundamentals of biology II ecology and evolution
fundamentals of biology II ecology and evolution Biol12000-02
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This 1 page Class Notes was uploaded by kyle dunham on Monday February 22, 2016. The Class Notes belongs to Biol12000-02 at Ithaca College taught by Nancy L. Jacobson in Winter 2016. Since its upload, it has received 17 views. For similar materials see Fundamentals of Biology II:Ecology and Evolution in Biology at Ithaca College.
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Yes YES!! Thank you for these. I'm such a bad notetaker :/ will definitely be looking forward to these
-Dr. Isidro Wolff
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Date Created: 02/22/16
Definitions that we went through today Macroevolution: Patterns of evolutionary change above the species level, encompassing the origin of new taxonomic groups, adaptive radiation, and mass extinction. A simpler definition of Macroevolution: The broad changes of life on earth -Macroevolution focuses on change that occurs at or above the level of species CLADOGRAMS Cladogenesis-in speciation, a species splits, and an isolated population diverges or separates. -The gene pools of the two resulting species evolve independently to one another -when this occurs multiple times, the splits form a branching pattern in the cladogram. -In a cladogram a clade is a group of species that are similar to one another traced from a common ancestor. -A branch point represents the time of genetic divergence and speciation among population of common ancestor -A cladogram represents the sequence of speciation events and so show the evolutionary relationships among species. -The higher the branch point of the most recent common ancestor, the more closely related the species are and vice versa. MAKING A CLADOGRAM 1.select the species your interested in 2.find close relatives of this group (this is the outgroup) 3.use the outgroup to determine the ancestral condition of each trait 4. group the species based on derived traits they share
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