<prompt> First Sign of pubertal development in boy is -Enlargement of penisEnlargement of testesAppearance of pubic hairAppearance of axillary hair  <response>: Ans. is b i.e., Enlargement of testis o In male - Sequence of change1. Growth of testes 3 ml in volume or thinning of scrotum 2 5 cm in longest diameter2 Pigmentation of scrotum growth of penisPubic hairAxillary hairo In female -1. Breast bud - First sign2 Pubic hair3. Menarche 