ANT 1 Lecture Notes - Lecture 1: Base Pair, Cytosine, Intron
Document Summary
Variation is the key: mechanisms of evolution. Production of genetic variation: mutation, sexual reproduction (recombination), migration (gene flow, reduction of genetic variation. In 1831, he joined a five-year mission aboard the hms beagle as a naturalist. The position was unpaid: thomas malthus (1766-1834, he was an english clergyman and pioneer economist, he wrote an essay on the principles of population (1798) that darwin read in 1838. Resources increase at a linear rate, but human populations increase at an exponential growth. Principles of populations basically states that: there will be a time where the resources will no longer be sufficient for the populations, he concluded that diseases and insufficient resources will keep populations in check. Sir charles lyell (1797-1875: he was a scottish lawyer trained at oxford, he became the leading geologist of his day and wrote the principles of geology . The same natural processes acting on the earth today are the same as in the past.
