front 1 Which of the following must occur for speciation to happen? | back 1 reproductive isolation |
front 2 Which of the following could result in speciation from biogeographic isolation? | back 2 the isolation of two populations of the same species |
front 3 Which of the following is the best definition of biogeographic isolation? | back 3 the separation of members of a species through geographical or biological forces |
front 4 Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. Which observation that he made about finches most supports that hypothesis? | back 4 The finches all appeared to be related but differed from the mainland population. |
front 5 A student argues that being separated geographically is the only way for speciation to occur. Why is he wrong? | back 5 Speciation can occur from biological forces as well. |
front 6 The northern red-legged frog, or Rana aurora, is found along the western coast from British Columbia to Northern California. Their typical breeding season lasts from January to March. The foothill yellow-legged frog, or Rana boylii, is found along the western coast from northern Oregon to central California. Their typical breeding season lasts from April to July. What mechanism might keep Rana aurora and Rana boylii from mating? | back 6 temporal isolation |
front 7 Cardueline finches can be found in many areas of the world, including North America and Asia. Hawaiian honeycreepers, which are found only in Hawaii, have been found to have DNA commonalities with this group of finches that indicate they have a common ancestor. Which mechanism might have led to the appearance of the Hawaiian honeycreeper? | back 7 geographical isolation |
front 8 Which is most likely to happen to a population that becomes anatomically isolated from the rest of its species | back 8 The population will become a separate species over time. |
front 9 Gentoo penguins present a potential mate with a pebble. Emperor penguins have a specific call and movement that they make to attract a mate. Which type of isolation do these penguins demonstrate? | back 9 behavioral isolation |
front 10 Two species of flies, Drosophila melanogaster and Drosophila simulans, can mate. They usually do not mate, however, even if they are kept together in a laboratory. Males court the females of both species, but the females prefer to mate with males of their own species. Which isolating mechanism does this describe? | back 10 Behavioral |
front 11 Why do species evolve during adaptive radiation? | back 11 to fill different niches |
front 12 What is the main difference between adaptive radiation and other forms of speciation? | back 12 Adaptive radiation happens over a relatively short time. |
front 13 Which lists the correct sequence of events for evolution to occur through isolation? | back 13 founding population arrives, biogeographic isolation occurs, genetic changes occur, reproductive isolation results |
front 14 Darwin hypothesized that new species could appear gradually through small changes in an ancestral species. What experiment did he conduct to test this hypothesis? | back 14 the breeding of pigeons |
front 15 Scientists today can use many investigative methods to study evolution. Which method was developed after Darwin’s time? | back 15 DNA comparisons |
front 16 Marsupials, such as kangaroos, koalas, and wombats, are mammals that care for their newborn young in a pouch. All marsupials that are found in Australia are thought to have evolved from a single species that migrated to the island and then adapted to the various niches. What does this example illustrate? | back 16 adaptive radiation |
front 17 Horses and donkeys can mate, but they produce a mule, which is always a sterile animal. This means that they cannot produce viable offspring and are __________________ isolated. | back 17 reproductively |