Bio 182 Final Exam Questions with Correct Answers

Bio 182 Final Exam Questions with Correct Answers Which of the following would be an example of convergent evolution? A. Hummingbird Bill sizes change in the shape to easily fit into flowers B. Competition among finches of Galapagos islands causing speciation C. Anteaters in Australia and anteaters and South America both developing long narrow skulls D. Maple trees migrating northward after glaciers started to recede in North America - Answer-C. Anteaters in Australia and anteaters and South America both developing long narrow skulls Natural selection is based on all of the following except which below? A. Individuals adapt to their environment in there by evolve B. Genetic variations exist within populations C.The best adapted individuals tend to leave the most offspring D. Populations tend to produce more individuals in their environment can support - Answer-A. Individuals adapt their environments in thereby evolve. In the mid-1900s Soviet geneticist name Lysenko Believe that one individual wheat plantWhen exposed to even colder temperatures and then fertilized would eventually start to produce more cold tolerant offspring. His Hypothesis here is most in agreement with the beliefs of? A. Hutton B. Lamarck C. Darwin. D. Lyell - Answer-B. Lamarck Darwins explanation of natural selection required long time spans, millions of years, in order to modify populations. From where did Darwin first get the concept of the earths ancient age? A. Charles Lyell B. Catholic Church. C. Alfred Wallace D. Thomas Malthus - Answer-A. Charles lyell Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities? A. By proposing that humans bats and dolphins shared recent common ancestor B. By identifying the bones as being analogous traits generated by different environments C. By the principle of convergent evolution which produces similar traits D. No answer text provided - Answer-A. By proposing that humans bats and dolphins share a recent common ancestor In one river, fish is called Pike chichlids are visual predators of algae eating fish because pike locate prey by sight. The population of algae eaters experiences producing pressures from pike, which of the following should least likely be observed in the algae eater population over the course of many generations? A. Selection for nocturnal algae eaters (Active only at night, hide during the day) B. Selection for males that attract females mates with bright coloration C. Selection for algae eaters that are faster swimmers d. No answer text provided - Answer-B. Selection for males that attract female mates with bright coloration Icthyosaurs Were ancient aquatic reptiles. Fossil show us that they had dorsal fins in tails, like fish too, even though they're closest relatives were not aquatic, but instead land dwelling reptiles that had neither dorsal fins and or tails. Does the dorsal fins and tails of ichthyosaurs and fish are :(select all that apply) A. Homologous B. Examples of convergent evolution C. Adaptations to a common environment D. Divergent similarities - Answer-b,c ? Which of these conditions should be completely prevent the occurrence of natural selection in a population over time? A. All variation between individuals in the population is due only to environmental factors B. The environment is changing at a relatively slow rate C. The population size is large D. The population lives in a habitat where there are no other species present - AnswerA. All variation between individuals in the population is due only to environmental factors Evolution requires variation which can come from a random process called ______, But this variation can be edited by the non random portion of evolution called ____. A. Mutation, natural selection B. Mutation, artificial selection C. Selection, environment D. Mutation, carnal selection - Answer-A. Mutation, natural selection Male peacocks spiders have very colorful abdomens and perform elobrate dances to entice mates. Because These colors provide no other benefit for the organism, they are likely the result of what type of selection? A. Disruptive B. Convergent C. Artificial D. Sexual - Answer-D. Sexual Male peacocks spiders have very colorful abdomens and perform elaborate dances to entice mates because these colors provide no other benefit for organisms they are likely the result of what type of selection. Producers and biological production cost may put limits on how bright a peacock spider can be. These limiting forces along with the selective forces from the previous paragraph ultimately result in what type of selection on male peacocks spiders. A. Destabilizing selections B. disruptive selection C. Stabilizing selection D. Animal invention - Answer-B Overtime the movement of people around earth has steadily increased. This is altered the course of human evolution by increasing A. Genetic instability B. Geographic isolation C. Genetic drift D. Gene flow - Answer-D. Gene flow Rocky mountain juniper and one seeded juniper have overlapping ranges. If pollen grains which contain sperm cells from one species are an able to germinate and make pollen tubes on female ovules which contain egg cells of the other species, then which of these terms is applicable A. Behavioral isolation B. Mechanical isolation C. Hybrid breakdown D. Reduced hybrid viability - Answer-B. Mechanical isolation