PSY352H5 Lecture 2: PSY252 - Lecture 2 cont'd.pdf
Document Summary
Darwin united purposless and seemingly purposeful meaningful design: mutations can be adaptive/ maladaptive, etc. Theory: in science is not speculation it is a coherent collection of facts and findings to make an idea: proven well established system of empirical findings. Universe is about 13. 5 billion years old. Life has existed for about 3. 2 billion years. Evolution like a tree growing (not a ladder where one species is better than the one before) Branches that are closer together physically means the species a related more closely by a common ancestor not far below the current time (glass plane cutting tree) Given enough time and lots of small changes anything can happen through the laws of nature. Evolution = change in allele/gene frequencies from one generation to the next: any mutation that allows for more reproductive success allows for the mutation to be carried on in higher frequency --> evolution. Evolution not an entity = a process doesn"t have a goal.
