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?
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
Which is most likely to happen to a population that becomes anatomically isolated from the rest of its species?
Why do species evolve during adaptive radiation?
Scientists today can use many investigative methods to study evolution. Which method was developed after Darwin’s time?
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?
Which lists the correct sequence of events for evolution to occur through isolation?
Which of the following could result in speciation from biogeographic isolation?
Which of the following must occur for speciation to happen?
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?
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