Final answer:
If the CRISPR-Cas9 system is used to knockout the transporter gene, it will disrupt the active transport process and lead to a decrease or absence of ion movement against the concentration gradient.
Step-by-step explanation:
Active transport is a process that requires energy to move substances against their concentration gradient. In the case of the J versus C1-C2 graph, it represents the movement of ions across a membrane using active transport. The graph shows the relationship between the concentration of ions (J) and the concentration gradient (C1-C2).
If the CRISPR-Cas9 system is used to knockout the transporter gene, it means that the gene coding for the transporter protein will be disabled. As a result, there will be no functional transporter protein to actively transport ions across the membrane. This will significantly disrupt the active transport process and lead to a decrease or even elimination of ion movement against the concentration gradient. Consequently, the J versus C1-C2 graph will show a decrease or absence of the active transport process.