Final answer:
During the maturation of certain stem cells in the bone marrow, immunoglobulin light-chain genes undergo rearrangement through site-specific recombination, resulting in the creation of diverse V-J immunoglobulin antibody molecules. This process enables B cells to recognize and eliminate different antigens.
Step-by-step explanation:
Rearrangement of immunoglobulin light-chain genes by site-specific recombination, also known as somatic recombination, occurs during the maturation of certain stem cells in the bone marrow that will become immune cells.
This process involves the random excision and splicing of variable (V) and joining (J) segments within the gene, resulting in the creation of diverse V-J immunoglobulin antibody molecules.
Each differentiated B cell in the human body typically has a unique variable chain, allowing them to recognize, bind, and eliminate different antigens.