BIO 3102 Study Guide - Convergent Evolution, Synapomorphy, Symplesiomorphy
Document Summary
Adaptive radiation: different island same finch but different beaks (for different size fruit at each island, natural selection. Advanced characters: primitive characters, more recently evolved, derived. Analogous: perform same function but different evolutionary origin, wing of insect and wing of bird. Apomorphy: derived characteristic within a group, shared by two or more taxa and most recent ancestor, relative to cladograms. Artifical taxonomy: giant lists heard then written down, derive from folk. Autoapomorphy: distinctive anatomical feature, derived trait, only in one member of clade. Binomen: two part name to species, genus then species. Camera eye: octopus and fish, evolved twice, no blind spot. Character convergence: two species interact that are similar, and then eventually it converges with to the other with respect to one or more trait, homolapsy, environment put pressure to take specific shape. Issue of evolutionary history given two character states: what came first the egg or the chicken. Character reversal: reverses to more ancestral state.
