What change is noted in stage 2 of the Tanner scale in males?

• A. Adult-sized testes and scrotum
• B. Sparse and straight pubic hair along the base
• C. Fully developed penis and testicles
• D. No changes from stage 1

Answer: (B)

In stage 2 of the Tanner scale, which is used to assess the development of secondary sexual characteristics during puberty, the key change noted in males is the appearance of sparse and straight pubic hair along the base of the penis. This reflects the initial phase of hair development that indicates the onset of puberty. At this stage, the hair is usually fine and lightly pigmented, differing significantly from the more developed and coarser hair seen in later stages.

The development of the testes and scrotum begins before this stage, and while adult-sized testes and scrotum appear in later stages, they are not characteristics of stage 2. Additionally, fully developed sexual organs, such as the penis and testicles, occur in subsequent stages, rather than in stage 2. Therefore, the correct representation of changes noted at this stage is the emergence of pubic hair. The absence of any changes from stage 1 would not apply here, as the appearance of hair marks a definitive change in male puberty progression.