BIO120H1 Lecture Notes - Lecture 3: Bipedalism, Kangaroo Rat, Gross Anatomy
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BIO120H1 Full Course Notes
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Henry viii small sa/v making him skinnier makes it better. Weasel: high sa/v - making it fatter makes it worse. Woodrat can curl into a ball shape, but weasel can only curl into a flat disk. Based on this, weasels should be suited for warm climates (shorter fur, less insulation) Weasels have to be long and skinny to burrow underground giving them access to their prey source. The gain in the extra food allows weasel to stay alive in the winter, eating more; the fitness gains of being a good hunter offsets the fitness costs of an expernsive metabolism. Natural selection has produced amazing organisms in terms of life in various environments, despite having many. Desert adapted, and have very stressful life as far as water goes. Li(cid:448)e i(cid:374) ha(cid:271)itats, (cid:449)here there is ofte(cid:374) (cid:374)o (cid:449)ater, (cid:271)ut do(cid:374)"t (cid:374)eed (cid:449)ater. As long as they have access to seeds that they have adapted to finding, they do not need water.
