Secondary sex characteristic
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A secondary sex characteristic is a physical characteristic of an organism that is related to or derived from its sex, but not directly part of its reproductive system. In humans, these characteristic
A peacock displays his long, colored tail, an example of his secondary sex characteristics.
An adult human's Adam's apple, a visible secondary sex characteristic common in males
A red deer stag's antlers are secondary sexual characteristics.
Adam's apple
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The Adam's apple is the protrusion in the neck formed by the angle of the thyroid cartilage surrounding the larynx, typically visible in men and less so in women. The prominence of the Adam's apple in
Secondary sex characteristic
…In humans, these characteristics typically start to appear during puberty—and include enlarged breasts and widened hips of females, facial hair and Adam's apples on males, and pubic hair on both. In non-human animals, they can start to appear at sexual maturity—and include, for example, the manes of male lions…
An example of male laryngeal prominence (front view)
An example of male laryngeal prominence (side view)
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