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.
1 Sometimes the lab has data to suggest whether the variant is likely to be harmful or not. 2  Your test result may indicate this (for instance, âsuspected deleteriousâ means that the lab thinks the mutation is likely to be harmful, and âfavor polymorphismâ suggests that the mutation is more likely to be meaningless). Sometimes the lab has data to suggest whether the variant is likely to be harmful or not. 2  Your test result may indicate this (for instance, âsuspected deleteriousâ means that the lab thinks the mutation is likely to be harmful, and âfavor polymorphismâ suggests that the mutation is more likely to be meaningless).