[Campbell Biology P.1151] Which of the following pieces of evidence supports the hypothesis t... | Practice Question

Which of the following pieces of evidence supports the hypothesis that neuronal pathways using dopamine are disrupted in schizophrenia?

  • A: Schizophrenia patients often experience hallucinations and delusions.
  • B: Many drugs that alleviate schizophrenia symptoms block dopamine receptors.
  • C: An individual sharing 100% of genes with an affected twin has a 48% chance of developing schizophrenia.
  • D: Schizophrenia refers to the fragmentation of normally integrated brain functions.

Explanation

The text states: 'Supporting evidence comes from the fact that many drugs that alleviate the symptoms of schizophrenia block dopamine receptors. In addition, the drug amphetamine “speed” , which stimulates dopamine release, can produce the same set of symptoms as schizophrenia.' These two points directly support the dopamine hypothesis.