Which mutagen would you choose to induce the following types of mutations in S. cerevisiae?
a) X-rays
b) Proflavin (intercalator)
c) 5-bromo-uracil (base analog)
d) Hydroxylamine (hydroxylating agent)
e) EMS = ethylmethane sulfonate (alkylating agent)
f) Nitrous acid (deaminating agent)