ISB 2-3-2011 - Cladistics Construction of branching...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
ISB 210 2-3-2011 17:50 What is Lineal Ancestor? Direct line of descent from the ancestor to present day species What is collateral Ancestor? Not direct(side branch) to the main line of descent Cousin/Close Relative Arrow cant be a fossil because it’s not prehistoric Petoskey Stones are fossils (state stone of Michigan) Fossilized Coral Devonian Period (315 Million Years Old) The ocean once covered Michigan Only 8 knows specimens of Archeopteryx. Wings had talons along with fingers on the end Ostrich feathers are perfectly symmetrical (flightless birds have symmetry) Feathered Dinosaurs come from China Micro Raptor (size of pigeon) Feathers on wings and legs Trying to recreate the Mammoth Species using a frozen Mammoth infant.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Cladistics Construction of branching diagrams that shows how species are related to each other. Allows us to reconstruct common ancestors Making tree diagrams Higher up on the tree the closer related the things are. Peripheral Isolate: Small population is a different environment Chordate-Verdebrae-Class-Mammal Mammals evolved from reptiles Mammal-Like Reptiles Reptile fossils have mammal traits. Darwin did not invent Evolution. Ideas around the same topic had been floating around that time period. Darwin gathered more evidence Started off with Artificial Selection What are the 2 basic components of Darwin’s theory of natural selection? Evolution has occurred 17:50 17:50...
View Full Document

This note was uploaded on 10/04/2011 for the course ISB 200 taught by Professor Ralphtaggart during the Spring '09 term at Michigan State University.

Page1 / 4

ISB 2-3-2011 - Cladistics Construction of branching...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online