question: Q:In nerve cells, microtubule-associated proteins (MAPs), most notably MAP2 and MAP tau, act to stabilize microtubules. In a mouse model, a mutant is developed that vastly reduced function across all families of MAPs, leading to increased microtubule degradation. Which cellular activity would likely be most affected?? 
  A:Cardiac muscle contraction;B:Transcription of mRNA from DNA;C:Krebs cycle;D:Meiosis