Final answer:
Parental somatic cells continue their regular functions in the body after the release of juvenile cells, undergoing cellular turnover through mitosis without being directly affected by spermatogenesis.
Step-by-step explanation:
The question concerns what happens to the parental somatic cells once the juvenile cells are released. Somatic cells are the regular body cells that make up most of an organism's body, excluding the germ cells (sperm and egg). During the process of spermatogenesis, which is the production of sperm, these somatic cells do not directly contribute; they provide a supportive environment for the germ cells to develop. Once spermatogenesis occurs, there is no direct impact on the somatic cells as their function is separate from that of reproductive cells.
The somatic cells continue to perform their specified functions in the body unless they reach their lifespan and are replaced through normal cellular turnover. The process of mitosis, allows for the division and renewal of these somatic cells. While germ cells undergo meiosis to become haploid gametes, somatic cells remain diploid and continue through their regular cell cycle.