CAS AN 234 Lecture Notes - Lecture 2: Exponential Growth, Daphne Major, Antimicrobial Resistance
7 Feb 2017
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Research assistant position w prof hodges > crhodges@bu. edu. 1) natural populations could grow exponentially, darwin"s elephant example, one breeding female and after several thousand years, the earth would be a ball of elephants, how populations could grow without any constraints. 2) despite this potential for exponential growth, natural populations normally are relatively stable. 3) therefore many individuals do not leave as many offspring as they might, what happened to all those potential elephants, predation, disease, not enough resources, elephants die and/or fail to reproduce. 4) those with advantageous characteristics will leave the most offspring, advantageous characteristics (best suited, ttest) trials that allow individuals to best meet the challenges of the prevailing environment. Challenges: predators, pathogens, other dangers in environment, enough food and nutrients, nd a mate, nd a good mate, have successful offspring. 5) because of heredity, offspring are like their parents, advantageous ( t) characteristics will be passed on to offspring, disadvantageous characteristics will be weeded out.
