Do admissions committees really prefer neuroscience PhDs have neuroscience undergrad degrees?
— Adam J Calhoun (@neuroecology) May 4, 2016
I suggest you assess the criteria used by graduate school admissions processes with an eye to labor issues.
How many of these are related to trying to get the best, most efficient, dedicated and smartest worker bees into the department labs?
How many are related to "we need these skills"?