Allopatric speciation results from __________ isolation of a population.
Fill in the blank(s) with the appropriate word(s).
Geographic
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An individual with an uncertain vaccine history has been brought to the emergency room after receiving severe lacerations in an accident with farm machinery
In addition to administering a tetanus toxoid vaccine, he is given a shot of tetanus immune globulin (TIG), a form of passive immunization. Why are both necessary? A) The tetanus vaccine provides immediate protection, and the tetanus immune globulin provides long-term protection. B) The doctor is not sure which will work faster in this patient so decides to administer both. C) The tetanus immune globulin is given only when there are severe injuries and a high risk of infection. D) Tetanus immune globulin is always given along with the tetanus vaccine. E) The tetanus immune globulin provides immediate, short-term protection, and the tetanus vaccine provides long-term protection.
Many bacteria that were originally classified in the genus Streptococcus are now placed into two new genera, Enterococcus and Lactococcus.
Answer the following statement true (T) or false (F)
According to the "new" revised phylogeny based on genetic analyses, annelids are a member of the Lophotrochozoa and are most closely related to which of the following groups?
A) echinoderms B) molluscs C) cnidarians D) arthropods
Which of the following is thought to be adaptive predatory behavior? Select all correct
A. cephalization B. jaws C. teeth D. tongue