Yeast: alpha 2 regulator in haploid and diploid cells

[KTK]

Hi. I'm at a complete loss on these questions.

1) WHAT ARE THE FUNCTIONS, (AND WHAT DOES IT LOOK LIKE ILLUSTRATIVELY) OF

THE ALPHA 2 REGULATOR IN HAPLOID AND DIPLOID CELLS?

2) DOES a1 CATALYZE A COVALENT MODIFICTION OF ALPHA 2 OR DOES IT

MODIFY ALPHA 2 BY BINDING OF a1 AND ALPHA 2 ALONE OR TOGETHER, TO

THE UPASTREAM REGULATORY SITES OF HAPLOID-SPECIFIC AND A-SPECIFIC GENE

FRAGMENTS?

-P.S. Sorry for the caps on the questions, I didn't realize till after finished typing that the button was on!

Thanks,
KTK