You have isolated two temperature-sensitive strains of yeast (which you've named giant and tiny) that show very different responses to elevated temperature. At high temperature, giant cells grow until they become enormous, but no longer divide. By contrast, tiny cells have a very short cell cycle and divide when they are very much smaller than usual. Based on your understanding of cell-cycle regulation by Wee1, and Cdc25, propose an explanation for how mutations in the genes encoding those proteins might have given rise to the giant and tiny strains phenotype, depending on the nature of the mutation. Choose one of these proteins (dk1, Wee1, or Cdc25) and explain how changes to the gene encoding that protein could results in either the giant or tiny phenotype, depending on the mutation that occurred.