Secondary Sexual Characteristics controlled by hormones which distinguish between sexually mature males and females are called secondary sexual characters..

Secondary Sexual Characteristics

Secondary sexual characteristics are physical traits that develop during puberty and distinguish males from females. These characteristics are not directly involved in the reproductive process but play a significant role in sexual attraction and mate selection.

Development of Secondary Sexual Characteristics

During puberty, the body undergoes various changes due to hormonal influences. These changes lead to the development of secondary sexual characteristics. In males, testosterone is the primary hormone responsible for the development of these traits, while in females, estrogen and progesterone play a crucial role.

Types of Secondary Sexual Characteristics

There are several types of secondary sexual characteristics that differentiate males and females:

1. Body Shape: Males generally have broader shoulders and a narrower waist, creating a V-shaped body, while females have wider hips and a narrower waist, resulting in an hourglass figure.

2. Facial Hair: Males develop facial hair, such as a beard or mustache, whereas females typically have less facial hair and only fine, light-colored hair on their faces.

3. Voice Changes: The male voice deepens during puberty due to the growth of the larynx, resulting in a lower pitch. Females do not experience such a significant change in their voices.

4. Breast Development: Females experience breast development during puberty, while males do not.

5. Body Hair: Males tend to have more body hair, including chest, abdominal, and pubic hair, while females have finer and less abundant body hair.

6. Muscle Development: Males typically have more muscle mass due to the effects of testosterone, while females have a higher proportion of body fat.

7. Menstruation: One of the significant secondary sexual characteristics in females is the onset of menstruation, which marks the beginning of their reproductive capability.

Significance of Secondary Sexual Characteristics

Secondary sexual characteristics play a crucial role in sexual attraction and mate selection. These traits indicate sexual maturity and reproductive potential. They help individuals identify potential mates and determine their suitability for reproduction. Additionally, these characteristics can also influence social interactions and self-esteem.

Conclusion

Secondary sexual characteristics are physical traits that develop during puberty and differentiate males from females. They include body shape, facial hair, voice changes, breast development, body hair, muscle development, and menstruation. These traits are significant in sexual attraction, mate selection, and social interactions.