ANT208H1 Lecture 3: ANT208 - Lecture 3.doc
Document Summary
= the most widely tested + widely accepted theory to explain the natural world. Includes: change in average phenotype overtime change in frequencies across generations microscopic (all living things/ individual dies, genes survive over generations, they are potentially immortal) = fit to the environment, a change that improves the fitness of the individual. Indirect: helping other individuals that are like you so your group genes survive . A relative concept: depends on well the others are doing. Species: change through time (i. e. not fixed) e. g. the whole group can get smaller legs, longer necks, etc. % of similar genes is high in a species. Are individuals that can mate to produce a fertile offspring. Microevolution does not involve creating a new species. Adaptive radiation: change b/c environment changes; macroevolution; as new niches are colonized one species may develop into several. Convergent design: different species in similar environments may develop similar morphology/functions etc.
