Final answer:
By the end of early childhood, girls have more adipose tissue than boys due to the different hormonal influences during puberty, with girls experiencing an increase in body fat.
Step-by-step explanation:
By the end of early childhood, girls have more adipose tissue than boys. This is because, during the adolescent growth spurt, females experience a significant increase in body fat, particularly in the breasts and hips. The distinct development patterns of male and female bodies during puberty contribute to the overall sexual dimorphism seen in adults. While both males and females go through various hormonal changes that bring about puberty, the impact of these hormones results in different secondary sexual characteristics between the sexes. For example, testosterone influences the development of male characteristics such as larger muscle growth, whereas females develop more adipose tissue as part of their secondary sexual characteristics.