Final answer:
During puberty, the growth of pubic hair usually occurs after the growth spurt and the onset of sperm emission.
Step-by-step explanation:
In males, the growth of pubic hair and sperm emission are two separate processes that occur during puberty. The growth of pubic hair, along with other body hair, is one of the later signs of puberty, usually beginning after the growth spurt has occurred. On the other hand, sperm emission, or the release of semen containing sperm, typically occurs earlier in puberty, around the age of 13. It's important to note that even though sperm is present in the semen, boys may not be fully fertile until they have completed their adolescent growth and achieved an adult appearance.