HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The nuclear membrane is ruptured.
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Amino acids do not bond to tRNA.
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A codon sequence is incorrect.
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Transportation of mRNA does not occur.
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Detailed explanation-1: -Q. Which of these is the direct result of an error in the transcription of a DNA nucleotide? The nuclear membrane is ruptured.
Detailed explanation-2: -We can see this here with cytosine being incorrectly paired with adenine. These errors can remain in the sequence of DNA and are known as mutations. Therefore, changes in the DNA base sequence are given by answer choice (C), mutations.
Detailed explanation-3: -Substitution Substitution, as related to genomics, is a type of mutation in which one nucleotide is replaced by a different nucleotide. The term can also refer to the replacement of one amino acid in a protein with a different amino acid.
Detailed explanation-4: -What happens when one nucleotide pair is lost from the middle of the coding sequence of a gene? The deletion of a nucleotide from the gene alters the reading frame downstream of the deleted base. This leads to the addition of incorrect amino acids in the polypeptide chain.