Your little sister,who is 13,has a bust that is visibly increasing.What type of sex characteristic describes this change?

Question

Quizplus · Accepted Answer

Secondary sex characteristics are physical features that appear during puberty but are not directly related to reproduction. Breast development is one of the most recognizable secondary sex characteristics in females. Primary sex characteristics are related to the reproductive organs themselves, while tertiary and quarternary sex characteristics are not widely recognized terms in biology.

Your Little Sister,who Is 13,has a Bust That Is Visibly