98 points Multiple Choice. Clearly circle the one choice that best completes the statement or answers the question. Worth two points each. Only favorable adaptations have survival value. Overproduction of offspring leads to a struggle for survival.
Spontaneous mutations can result in the appearance of new traits.
Characteristics acquired during an organism's life are not passed on through genes. Darwin was able to formulate his theory of evolution based on several facts. All populations have the potential to increase in size. Individual organisms in a population are not alike. Most populations are stable in size.