1. Lab 7. Overview  Instructor collects lab. 6 write up and checks pre-lab. in lab notebook  Discussion of “Mating Game” write up  Taxonomic Keys, Conifers, & Phylogeny Overview.  Use key to identify conifers.  Construct two phylogenies from lab manual.  Complete Simbio Flowers & Trees workbook in-class. (Workbook due Lab 8, may turn in early.)  Examine plant cultures.  Discuss independent project with instructor.

2. Taxonomic Keys  Taxonomic Key = tool designed to allow a user identify organisms by focusing the user on specific variable characteristics. (It does NOT identify evolutionary relationships)

3. Conifers

4. Phylogeny  Phylogeny / Phylogenetic Tree = diagram of the pattern of evolut. descent of a group of species derived from an ancestral species.  Monophyletic group (Clade) = an ancestral species and all of its descendants

5.  Speciation and microevolution cause a pattern of characteristics that reflects their descent.  Uniquely derived characteristics identify monophyletic groups.  Derived trait - a newly evolved characteristic; evidence of shared ancestry.  Ancestral trait - the trait that changed to a derived trait; NOT evidence of shared ancestry Phylogeny Reconstruction

6. Fly Bee Spider Round- worm Earth- worm Jellyfish - OG molting legs wings symmetry flagella on sperm present absent present absent present absent present bilateral present absent present absent present absent presentradial

7. Phylogeny Reconstruction Fly Bee Spider Roundworm Earthworm wings legs bilateral molting no flagella on sperm

8. Today’s Activity Reminders  READ the instructions (  ) in the manual.  Be sure you could identify a conifer specimen using the key in the lab manual before you leave.  Be sure you could construct a phylogeny based on data as provided in the manual before you leave.  You must work with your partner on your Flowers & Trees workbook in lab. If you do not finish you may turn it in next lab period.  Your instructor needs a revised ind. proj. hypothesis, supplies list, and trial run plan before you leave.