THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Point
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Frameshift Deletion
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Frameshift Insertion
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Point Silent
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Detailed explanation-1: -The correct answer is: Substitution.
Detailed explanation-2: -When DNA damages in the transcribed strand of an active gene are bypassed by an RNA polymerase, they can miscode at the damaged site and produce mutant transcripts. This process known as transcriptional mutagenesis can lead to the production of mutant proteins that could be important in tumor development.
Detailed explanation-3: -A nonsense mutation occurs in DNA when a sequence change gives rise to a stop codon rather than a codon specifying an amino acid.
Detailed explanation-4: -Mutations have many possible causes. Some mutations occur when a mistake is made during DNA replication or transcription. Other mutations occur because of environmental factors. Anything in the environment that causes a mutation is known as a mutagen.
Detailed explanation-5: -Mutations can be of many types, such as substitution, deletion, insertion, and translocation.