Biological parents are the individuals who contribute genetic material to a child, typically through the processes of conception and birth. This includes the mother, who provides the egg, and the father, who provides the sperm. Their genetic contributions determine many of the child's physical traits, such as eye color and height, as well as some aspects of personality and health. In many cases, biological parents are also the primary caregivers for their children, raising them and providing emotional and financial support. However, some children may be raised by adoptive parents or other guardians, while still having biological parents who may or may not be involved in their lives.