Beadle and Tatum irradiated Neurospora and initially grew the mutant strains on complete medium. How ...

Beadle and Tatum irradiated Neurospora and initially grew the mutant strains on complete medium. How were they
  able to determine the type of mutation for each strain?
  a. By growing the mold on a complete medium with extra vitamins and nutrients
  b. By growing the mold on minimal media supplemented with different combinations of amino acids and
  vitamins
  c. By growing the mold in its diploid form to see which traits were masked
  d. By comparing Neurospora to other species of mold
  e. By observing the marked differences in morphology between the different strains

Question 2

In the Beadle and Tatum study, it was important that Neurospora was haploid because:a.
   it is easier to grow haploid molds in the laboratory.
  b. haploid molds have simpler nutritional requirements than do diploid molds.
  c. a mutation that arises is not masked by a normal allele on a homologous chromosome.
  d. haploid Neurospora will always mutate.
  e. diploid Neurospora will always mutate.