PSB-2000 Lecture Notes - Lecture 2: Parietal Lobe, Convergent Evolution, Brain Size
Document Summary
Asomatognosia- deficiency in awareness of part of ones own body. Results in damage to the right parietal lobe. Structural similarities among living species suggest common ancestors. Impact of selective breeding physical features as well as behaviors contribute to fitness . Amphibians evolved as bony fishes that left the water briefly. Evolution f mammals is the develop mammary glands to nurture young. Humans beling to the fsmily hominids and genus homo definitions. Exaptations- evolved to do one thing byt now doe something else. Bird ings on birds that do not fly. Homologous structures- similar structures to to a common evolutionary orgin. Analogous structures- similar structures without a common orgin. Convergent evolution- the evolutionof imilar solutions to the same environmental demands by unrelated species. Brain size is generally correlated with body size but is not related to intelligence. The human brain has increased in size through evolution 9cerebrum) Dichotomous traits- occur in one form or the other, never in combination.
