Common ideas about evolution, revisited Try answering the overhead question from lecture 28 again. There is no evidence that evolution is occurring now, in one or a few of our lifetimes. All evolution is adaptive. Although a pregnant woman develops a craving for pickles, her baby will not inherit a preference for pickles, because characteristics acquired during one's lifetime are not inheritable. An evolving species is one that is progressing toward perfection, toward its ideal form.
Most organismal biologists consider evolution to be a fact.
Also pests evolving resistance to pesticides. Wrong, mutation, gene flow and genetic drift cause evolution that is NOT adaptive. Only natural selection causes adaptive evolution. Correct, characteristics acquired during one's lifetime are not inheritable by one's offspring. Wrong, evolution does not lead to perfection, for all the reasons we discussed today in part III C 3.