Final answer:
RAG genes and gene products RSS play a role in somatic recombination for immunoglobulin gene rearrangements. They are useful in B lymphocytes and T lymphocytes.
Step-by-step explanation:
RAG genes and gene products RSS
RAG genes, also known as recombination activating genes, play a crucial role in the somatic recombination process of immunoglobulin gene rearrangements. These genes are responsible for the production of RAG proteins, which are enzymes involved in rearranging DNA segments during the development of immune cells (B or T lymphocytes). The RAG proteins recognize and bind to specific sites on the DNA called recombination signal sequences (RSS).
Two cell types where RAG genes and gene products RSS are useful
RAG genes and gene products RSS are useful in the cells that undergo somatic recombination during the maturation of immune cells in the bone marrow. These two cell types are B lymphocytes and T lymphocytes. Both of these cell types are crucial for the adaptive immune response as they can recognize and eliminate invading antigens by producing antibodies or directly attacking infected cells.