Seven-year-old samantha suffered trauma to the language centers in the left hemisphere of her brain as a result of a bicycle accident. although she did have some language deficits after the trauma, she eventually was able to recover much of what she had lost because new growth in unaffected areas of the brain made up for the damage. the ability to recover from brain trauma in this fashion is an example of

Which of the following best reflects what we know about how the flu virus moves between species? a) the flu virus in a pig is mutated and replicated in alternate arrangements so that humans who eat the pig products can be infected. b) a flu virus from a human epidemic or pandemic infects birds; the birds replicate the virus differently and then pass it back to humans. c) an influenza virus gains new sequences of dna from another virus, such as a herpesvirus; this enables it to be transmitted to a human host. d) an animal such as a pig is infected with more than one virus, genetic recombination occurs, the new virus mutates, the virus is passed to a new species such as a bird, and the virus mutates again and can now be transmitted to humans.