of origin function 12.5 Isolating the origins of yeast replicons 50 Mutations in B elements reduce Figure 12 10 An ARS extends origin function for 50 bp and includes a B2 B1 A consensus sequence(A) and Mutations in core col s abolish origin funct additional elements(B1-B3) A T TT A T PU T A 十 A T A PY A AA T 消当Figure 12.10 An ARS extends for ~50 bp and includes a consensus sequence (A) and additional elements (B1-B3). 12.5 Isolating the origins of yeast replicons