A child's heredity consists of genes that are passed along from the parents. What do these genes primarily determine?

Genes that are inherited from parents play a crucial role in determining a child's physical characteristics, which encompass a wide range of attributes such as eye color, hair color, height, and other observable traits. This concept is rooted in the principles of genetics, where specific genes influence the development of these physical traits.

While other options like social skills, brain development, and intellectual abilities can be influenced by a combination of genes and environmental factors, they are not directly determined solely by genetic inheritance. Social skills often develop through interpersonal interactions and experiences rather than purely from heredity. Brain development is influenced by both genetic predispositions and external environmental exposures during critical developmental periods. Similarly, intellectual abilities can be a result of genetics, but they are also significantly shaped by educational opportunities, social environment, and personal experiences.

In contrast, the physical aspects are more tangible and strongly connected to genetic makeup, making them the primary determinant when discussing heredity in children.