Final answer:
Immediately after a spermatogonium completes cell division, the correct answer is D: the primary spermatocyte is directed toward the lumen of the seminiferous tubule. This cell will undergo further meiotic divisions to eventually form mature sperm.
Step-by-step explanation:
Which of the following is true immediately after a spermatogonium completes cell division? The correct answer is D. The primary spermatocyte is directed toward the lumen of the seminiferous tubule. Once the spermatogonium, which is a stem cell, undergoes mitosis, it produces two identical diploid daughter cells. One of these cells remains a spermatogonium to maintain the stem cell line, and the other becomes a primary spermatocyte, which will continue on the path of spermatogenesis.
As the primary spermatocyte moves towards the lumen, it undergoes a cell division known as meiosis I, resulting in two haploid secondary spermatocytes. Each secondary spermatocyte then undergoes meiosis II to produce two haploid spermatids, making a total of four spermatids from one primary spermatocyte. The process of spermiogenesis then occurs as these spermatids develop into mature spermatozoa, which are eventually released into the lumen of the seminiferous tubule.