BIO 1130 Study Guide - Midterm Guide: Helicoid, Basal Body, Gonorrhea

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Speciation- rate of evolutionary change: anagensis: organism is replaced by a different one over time. No increase in species #, change in species as organisms change: cladogenesis (branching): lineage that has 2 distinct morphologies in its population, one evolves to a new/different species. 1 population feeds in grassland and another in the forest. Morphology does not distinguish difference, but they don"t mate: hybridizing, phylogenetic species* (dominating) If you see the exact same set of apomorphies (derived characters) on an organism somewhere else, then it must be the same species. Don"t need to see if they"re mating with each other. Works with all organisms- use genomic sequences of bacteria. Ring species (parapatric): groups that are diverging (ex. salamanders in california) Interbreed on their boundaries, but at the far end they aren"t since they have diverged that dramatically- on route to becoming separate species. Cannot fit male & female together for sperm transfer- common in insects.