HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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3
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4
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5
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Detailed explanation-1: -If a mutation occurs, leaving 12 bases, the maximum number of amino acids that could be coded for by this DNA segment is 12.
Detailed explanation-2: -The number of potential triplets is 64. Subtracting for a necessary stop codon, organisms could code for up to 63 different amino acids.
Detailed explanation-3: -These 20 amino acids are organized in a linear way and this linear structure of proteins is known as the primary structure. Any change (genetic mutation) in the primary structure of a protein can cause a sequence change in the linear amino acid chain. Hence, option (d) is accurate.
Detailed explanation-4: -The DNA (deoxyribonucleic acid) sequence is 105 nucleotides long. Hence, the protein sequence of a 105-nucleotide-long DNA sequence will be made of 35 amino acids.
Detailed explanation-5: -An insertion mutation occurs, leaving 31 nucleotides in a DNA sequence. A deletion mutation occurs, leaving 14 nucleotides in a DNA sequence.