Gene duplication is the copying of a region of DNA that contains a gene. This is different from a regulatory mutation, which is a loss of an enhancer portion of a gene. This changes the way the gene is regulated, affecting the development of the part of the organism that it corresponds to without losing this part of the organism. Finally, a coding sequence mutation is a mutation that causes a change in the coding sequence. The coding sequence encodes for the gene product. These mutations include frameshift mutations, missense mutations, nonsense mutations, and silent mutations. Gene duplication, coding sequence mutations, and regulatory mutations are all significant factors in how snakes gained the ability to use crotamine as a defense mechanism. Crotamine genes, which encode for the venom that snakes use to hunt and defend, evolved from defensins. Defensin is an antimicrobial gene that underwent gene duplication, which altered the regulatory and coding sequences of the original defensin gene. This created a crotamine gene and allowed for the production of venom.
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Deviance in Television
Deviance, in a sociological sense, is a violation of cultural norms. Television is a strong medium for which people from different areas may view the same content. The content that they view draws on different values of the everyday person, while introducing people to content that would otherwise never have been viewed. Deviance is just that kind of content. Deviant behavior in television opens a new realm of thought for viewers increases the popularity of certain TV shows and may even change the way people behave. Because television is such an influential pop-culture force, it very frequently sways its viewers into behaving differently because of what they are watching.
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"Gene duplication, coding sequence mutations, and regulatory mutations are all significant factors in how snakes gained the ability to use crotamine as a defense mechanism." A reader might expect this phrase to be defended by expamples for each, but you only mention the effect of gene duplication on snake defense mechanisms.