If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm?

Question

Quizplus · Accepted Answer

It takes approximately 1-2 years for sperm to fully mature and become viable. Therefore, it is unlikely for a young male to ejaculate mature, viable sperm at the same time as sperm production, within the next 1-2 months, or just prior to the onset of puberty.

If a Young Male's Body Is Just Beginning the Process