Imagine that you have an E. coli cell with 2 copies of the lac operon with genotype I+P+O+Z+Y+ / I-P+OCZ-Y+. What will be the expression pattern of lacZ in this cell? a) on, only in […]
Before taking a blood sample from the finger, the blood bank technician commonly rubs the skin with a pad soaked in alcohol. Many people think that […]