Explain what role dna plays in an organism?

Which of these is the most likely consequence of falling petroleum price

I’m stuck on this question cuz i’m stupid sksksksk

Yeast cells reproduce quickly by budding. this is a form of reproduction so all the yeast cells a) sexual; vary b) asexual; vary c) asexual; are identical d) sexual; differ from the parents submit hint structures and functions of cells cellular reproduction