A very large star of high luminosity and low surface temperature. Red giants are thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.
The main role of DNA in a cell is the long term of storage of information thats why its important
A mutation is a new element added to the genetic buildup of an organism. this leads to new abilities that makes that organism adapt to different things, this is passed down through the organisms descendants which will help them get through situations other organisms can't, thus helping the entire species evolve.
