While blizzards often feature extreme cold and heavy snow, there are actually no temperature or snow depth requirements for a storm to qualify as a blizzard. Occasionally, blizzard conditions will present when there is no precipitation.
Definition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.efinition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
  Because DNA is a much stable molecule than RNA. However, in many viruses genetic information is encoded in their RNA. Consequently, these viruses mutate at a very high r â¦ ate and change constantly to avoid onslaught from the host's immune system.If the DNA were to mutate as rapidly as RNA, the life would not be as we know it.owever, in many viruses genetic information is encoded in their RNA. Consequently, these viruses mutate at a very high r â¦ ate and change constantly to avoid onslaught from the host's immune system. If the DNA were to mutate as rapidly as RNA, the life would not be as we know it.