When two people create a child, they each supply their own set of genes. In simplistic cases, such as the red/brown hair, each parent supplies one code, contributing to the child's hair color. For example, if dad has brown/red he has a 50% chance of passing brown hair to his child and a 50% of passing red hair.
Navy SEALs or SEa Air and Land teams are called this because of there ability to operate in any environment. There training is very extensive so they are qualified divers, parachutist and land warfare specialist. Fb.12053306969710.
The acronym SEAL stands for Sea, Air and Land Force, which is a division of the U.S. Naval Special Warfare and Special Operations teams. Team members are referred to as SEALs..