Figure 2.—

Deletion in EXO1 permits growth of cdc13-1 mutants at high temperatures. (A–S) Small aliquots of fivefold dilution series of the strains indicated, and growing at 20°, were transferred to plates and incubated at the temperatures shown for 3 days before being photographed. Some plates (E, J, O, and S) were incubated for three cycles of 36° for 4 hr followed by incubation at 23° for 4 hr and colonies were then allowed to form at 23° for 6 or 3 days. The relevant genotypes are indicated on the left, and strain numbers are shown in parentheses.