Selectable markers are crucial for identifying recombinant cells. Their absence leads to: 1. Increased complexity: Reliance on alternative methods like PCR or sequencing would escalate costs and lengthen timelines. 2. Higher error rate: Non-recombinant cells might proliferate more than recombinant ones, complicating selection. 3. Importance of markers: For instance, antibiotic resistance genes simplify identification by permitting only successfully transformed cells to grow. Consequently, omitting markers significantly complicates cloning workflows and diminishes efficiency.% Quick tip