Natural Selection Natural selection is the process by which those heritable traits that make it more likely for an organism to survive and successfully.
Speciation How many species are there? All organismsJust animals In short, an awful lot!
Descent with Modification: A Darwinian View of Life.
THE SIXTH MASS EXTINCTION Human Accountability for Species Becoming Endangered and Extinct Erica Hardin 4-26-2012 Environmental Biology 1.
Stratigraphy, the Fossil Record & Adaptive Radiation Ju Whan Kim, Jacob Finnegan, Richard Kerfoot & Charmaine Chan BIOL 1510 Module 1 Group B-26.
Phylogeny and Systematics Chapter 25. Introduction Evolutionary biology is about both processes (e.g., natural selection and speciation) and history A.
IS NATURE REALLY NATURAL?. Ascendant and descendant species. Isabella Kirkland.
The Origin of Species Chapter 22. The Nature of Species The concept of species must account for two phenomena: –The distinctiveness of species that occur.
Monophyletic groups.
Classification of Living Things 20-3 Chapter 20. Classification of Living Things 2 Cladistic Systematics Now that we know how to read phylogenetic trees….how.
Monophyletic groups
Part of AS 90717 Relates to US 6317. What is EVOLUTION ? Evolution is change over time - Change means heritable change in a population Time means over.
