THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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when a codon is substituted with a different codon in mRNA
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when a nitrogen base is substituted with a different nitrogen base in DNA
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when a nitrogen base is added to DNA or deleted from DNA
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when a gene breaks and moves to another chromosome
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Detailed explanation-1: -A reading frame consists of groups of three nucleotides that each code for one amino acid . A frameshift variant occurs when there is an addition or loss of nucleotides that shifts the grouping and changes the code for all downstream amino acids.
Detailed explanation-2: -A point mutation occurs in a genome when a single base pair is added, deleted or changed.
Detailed explanation-3: -An insertion or deletion involving a number of base pairs that is not a multiple of three, which consequently disrupts the triplet reading frame of a DNA sequence.
Detailed explanation-4: -One type of frameshift mutation is called insertion. As the name implies, an insertion occurs when a single nitrogen base is accidentally added in the middle of a sequence. This throws off the reading frame of the DNA and the wrong amino acid is translated.
Detailed explanation-5: -Deletions A deletion, resulting in a frameshift, results when one or more base pairs are lost from the DNA (see Figure above).