Monday, March 8, 2010
On page 8, Coyne breaks down how the common ancestor of vertebrates evolved into the organisms we see today. Describe how the different traits developed in these organisms and how these traits were passed on through mutations in genes from the common ancestor to the organisms we see today in the vertebrate phylogeny. Use key words such as vertebrate, jaws, digits, amniotic egg, hair, placenta, and opposable thumbs. What were the names of the different species that arose from the splitting of species from the common ancestor due to these traits? How are these species similar and dissimilar? Explain how these traits lead to a "natural" classification of these species and how "natural" classification is strong evidence for evolution.