1. Hormonal differences: Sex hormones, such as estrogen and testosterone, play a crucial role in growth and development. During puberty, these hormones are responsible for the development of secondary sexual characteristics, such as breast development in females and facial hair growth in males. They also contribute to the growth of bones and muscles, leading to differences in body size and shape between males and females.
2. Growth spurts: Males and females experience growth spurts at different times during adolescence. Girls typically experience their growth spurt earlier than boys, usually between the ages of 9 and 14, while boys experience their growth spurt later, between the ages of 12 and 16. These growth spurts are characterized by rapid increases in height and weight.
3. Body composition: Sex differences also influence body composition. Males tend to have a higher muscle mass and lower body fat percentage compared to females. This is partly due to the effects of testosterone, which promotes muscle growth and development. Females, on the other hand, tend to have a higher body fat percentage, which is important for reproductive functions and hormone regulation.
4. Sexual maturation: Sex also influences the timing and progression of sexual maturation. Girls typically experience the onset of menstruation (menarche) around the age of 12-14, while boys experience the development of facial hair and deepening of the voice during puberty. These changes are influenced by sex hormones and mark the transition from childhood to adulthood.
It is important to note that while sex can influence growth, individual variations within each sex are also significant. Factors such as genetics, nutrition, and overall health can also play a role in growth and development.