BIOL10001 Lecture 12: BIOL10001 Lecture 12 Notes
20 Sep 2018
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Document Summary
Adaptation: any alteration in the structure function or behaviour of an organism that results from natural selection and by which the organism becomes better able to survive and reproduce in a particular environment/ecological niche. Evolution: gradual change in a population"s gene pool, resulting in changes in characteristics of living organisms in that population over successive generations, based on processes such as mutation, natural selection and genetic drift. This results in the survival of those individual best adapted to prevailing environmental conditions. These individuals then tend to produce more o spring than less well adapted individuals. Has a profound in uence on the rate of chemical reactions, thus in uences. Seasonality: wet and dry seasons, timing di ers in north and south. Variation in arid australia 10% higher when compared to other arid zones. Rain is unpredictable therefore food availability for animals is unpredictable. Balance costs of thermoregulation with costs of water gain/loss. Australia is the second driest continent on earth.
