MourningBands added 2 new photos. Honoring Those that Answered the Call. When people answer the call of public service with their lives, as far as I'm concerned, that's the gold standard. That was my thought when I brought these pieces together, and my thought each and every time one of them falls in the line of duty.
Best Answer: A mutation is a change in DNA. Genetic recombination can apply to two things: crossing-over between homologous chromosomes or recombining of traits when gametes fuse during fertilization. They all contribute to evolution because they result in a new organism with a new combination of characteristics. This new combination of characteristics is subjected to natural selection.
Mutation. As discussed in the introduction, mutations are changes in the genetic code that lead to different traits arising. These mutations can be passed down genetically and either be lost or become fixed. Since mutation usually affects a single individual in a population, the initial fraction is small and the probability of fixation is thus also small (high probability of loss).