Sign of pubey in boys is
High-Yield Explanation
In girls, the first visible sign of pubey is the appearance of breast buds (Thelarche), between 8-12 years of ageIn boys the first visible sign of pubey is testicular enlargement, beginning as early as 9 1/2 yr.(Refer: Nelson's Textbook of Pediatrics, SAE, 1st edition, pg no. 926)