BIOL 1110 Lecture Notes - Lecture 25: Hominidae, Metapopulation, Downy Woodpecker
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Ex: lets say, we have got a cold morning and no clothes. Vasoconstriction and reduce heat loss at the skin level. To maintain the core temp, we are going to observe vasodilation at the skin level. Rete mirable: countercurrent heat exchanger. b) whole organisms clinal variation in endotherms. Cline- gradual change in population characteristics over a geographical range. Body size changes across the range of latitude. Bergmann"s rule: as we observe population of an endotherm distributed across a range of latitude we are going to observe an increase in body size with an increasing latitude. Bigger bodies allow for better thermoregulation and longer fasting south. Systematics : scientific study of the diversity of organisms and their evolution relationships. Taxonomy: the science of naming and describing and classifying organisms taxonomic hierarchy. Species (sapiens: domain bacteria, most abundant and diverse group on the earth. Always the age of bacteria: many are pathogenic.