Final answer:
Females tend to have a more rounded appearance after adolescence due to layers of fat under the skin, highlighting distinct secondary sex characteristics such as deposition of fat in the breasts and hips.
Step-by-step explanation:
Adolescent Growth and Body Composition
After the period of rapid adolescent growth, females tend to have a more rounded appearance than males, which is mainly due to layers of fat under the skin. During puberty, females experience significant changes in their bodies, including the deposition of fat, predominantly in the breasts and hips, which contributes to breast development and a broadening of the pelvis. This growth is distinct from males, who tend to develop greater muscle and bone mass, especially in the upper body, leading to broader shoulders and chest. Unlike males, females also experience a major increase in body fat, which gives them their characteristic rounded appearance post-puberty.
The terms males and females refer only to biological sexes and do not account for gender identity, which may be different. Puberty is a complex process influenced by hormones, such as growth hormones, thyroid hormones, and sex hormones like estrogen and testosterone, affecting body composition and shape.