Song Audio. Numb is track #6 on the album Nick Jonas. It was written by Posner, Mike / Jonas, Nick / Musto, Matt / Monson, Nick / Wilson, Raykeea. Numb is track #6 on the album Nick Jonas. It was written by Posner, Mike / Jonas, Nick / Musto, Matt / Monson, Nick / Wilson, Raykeea.
Genetics at Work Image Gallery. Redhead extinction is the idea that the recessive gene that causes red hair will eventually die out. Read about the theories behind redhead extinction.See more pictures of genetics at work.n fact, the National Geographic story provided some data about red hair in the world population, but it only said that news reports have claimed that redheads were going extinct [source: National Geographic ].
As you age, melanin is reduced, which is why your hair turns gray and, ultimately, white (this means there's no melanin left). 2. Scientists Discover Gene Linked to Graying Hair. What exactly causes melanin to be reduced and hair to turn gray has remained a mystery, until now. An international team of researchers has discovered the first gene linked to gray hair.