29 July 2010, 3:24 pm
1. Which of the following describes a population? A) dogs and cats living in Austin, Texas B) four species of fish living in a pond C) dogwood trees in Middletown, Connecticut D) roses and tulips in a garden 2. The finches that Darwin studied differed in the shape of their beaks. According to Darwin, the finches probably A) all had a common ancestor B) were born with identical beaks C) were descended from similar birds in Africa D) ate the same diet 3. New species form A) when subspecies diverge more and more B) because of natural selection C) when members of the same species become adapted to new environments D) all of the above 4. The hypothesis that evolution occurs at an irregular rate through geologic time is known as A) directional evolution B) directional equilibrium C) punctuated equilibrium D) punctuated evolution 5. According to the Hardy-Weinberg principle, the p stands for A) the most common allele B) the recessive allele C) the dominant allele D) the least-favored allele 6. Mutations occur because of A) errors in DNA replication B) exposure to radiation C) exposure to chemicals D) all of these 7. The resistance of many bacterial species to antibiotics is another example of A) stabilizing selection B) directional selection C) disruptive selection D) extreme selection 8. A drastic short-term reduction of population size caused by natural disasters, disease, or predators is called A) gene flow B) founder effect C) microevolution D) bottleneck effect 9. The traditional, Darwinian view of evolution was that of A) slow, gradual change over long periods of time B) moderate changes over long periods of time C) fast, rapid changes in a short amount of time D) species do not change 10. Which of the following are types or patterns of natural selection A) disruptive selection B) directional selection C) stabilizing selection D) all of these no need to be a smartass. if you're not going to help, don't answer ;)... Read More »