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 modern day U.S. Navy SEALs can trace their roots to World War II. The United States Navy recognized the need for the covert reconnaissance of landing beaches and coastal defenses. As a result, the Amphibious Scout and Raider School was established in 1942 at Fort Pierce, Florida.