How many base-pairs would have to be deleted in a mutational event to eliminate a single amino acid from a protein and not change the rest of the protein? You must enter a whole number (no text)
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- A small section of a gene for a protein has the following nucleotide sequence: CCT AAG GAT TCA CTT Which of the following mutations would cause a missense mutation in the sequence shown above? a. Replacement of first guanine base with cytosine base b. Replacement of first thymine base with cytosine base c. Replacement of second thymine base with adenine base d. Replacement of seond guanine base with adenine baseA small section of a gene for a protein has the following nucleotide sequence: CTA TCC CCT ACG TCA Which of the following mutations would cause a silent mutation in the sequence shown above? a. Replacement of first thymine base with adenine base b. Replacement of second thymine base with guanine base c. Replacement of first cytosine base with guanine base d. Replacement of second adenine base with thymine baseA small section of a gene for a protein has the following nucleotide sequence: TAT AGG GAC CTA TGT Which of the following mutations would cause a missense mutation in the sequence shown above? a. Replacement of first cytosine base with guanine base b. Replacement of final thymine base with guanine base c. Replacement of second guanine base with cytosine base d. Replacement of first thymine base with adenine base
- Which of the following sequences is most likely to form a beta-turn? Explain why? Sequence A: Ser-Pro-Asn-Val Sequence B: Gly-Ser-Asn-Pro Sequence C: Ser-Asn-Gly-ValThe genetic code uses three bases to encode one amino acid. Why can't the code use only two bases to encode each amino acid?A small section of a gene for a protein has the following nucleotide sequence: GCT CTA GCT ATC TGA Which of the following mutations would cuase a silent mutation in the sequence shown above? a. Replacement of second adenine base with thymine base b. Replacement of first thymine base with adenine base c. Replacement of second guanine base with cytosine base d. Replacement of first cytosine base with guanine base
- If you are given four nucleotides, how many possible combinations of five letter codons will you have? 16 64 256 54 1024A small section of a gene for a protein has the following nucleotide sequence:CTG GGA TCC TAA GGTWhich of the following mutations would cause a nonsense mutation in the sequence shown above? Select one: a. Replacement of second adenine base with a cytosine base b. Insertion of guanine base after the first thymine base c. Insertion of guanine base after the first adenine base d. Replacement of second cytosine base with a adenine baseWhat is the resulting polypeptide: _______________________________________________________? What effect does this mutation have on the polypeptide? Make sure to compare to the original polypeptide. What effect might this have on the function of the protein? Why?
- If you are given four nucleotides, how many possible combinations of five letter codons will you have? A. 64 B. 256 C. 54 D. 1024Does a single base-pair substitution in a strand of DNA always result in a new amino acid in the protein coded for by that gene? Why or why not?Which of the following mutations would be most likely to have the most negative effect on the functioning of a protein produced by the gene? Group of answer choices a deletion of one nucleotide at the beginning of the coding sequence a substitution of one nucleotide at the beginning of the coding sequence an insertion of three nucleotides near the end of the coding sequence a substitution of one nucleotide near the end of the coding sequence