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Name: Which of the following statements about a transition mutation in the s
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Description: Which of the following statements about a transition mutation in the sequence CGG is true? sequenceIt could result in a single base substitution to give the new codon CCG.It could result in a single base substitution to give the new sequence AGG.It c

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Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter11: Genome Alterations: Mutation And Epigenetics

Section: Chapter Questions

Problem 14QP: In the gene-coding sequence shown here, which of the following events will produce a frameshift...

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A frameshift mutation is caused by a: a. nucleotide substitution b. three-base insertion c. premature stop codon d. one-base insertion e. two-base deletion
A certain mRNA strand has the following nucleotide sequence: 5AUGACGUAUAACUUU3 What is the anticodon for each codon? What is the amino acid sequence of the polypeptide? (Use Figure 13-5 to help answer this question.) Figure 13-5 The genetic code The genetic code specifies all possible combinations of the three bases that compose codons in mRNA. Of the 64 possible codons, 61 specify amino acids (see Figure 3-17 for an explanation of abbreviations). The codon AUG specifies the amino acid methionine and also signals the ribosome to initiate translation (start). Three codonsUAA, UGA, and UAGdo not specify amino acids; they terminate polypeptide synthesis (stop).
A 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 base
The amino acid glycine is encoded by four codons: GGA, GGC, GGG, and GGU. Which of the following statements correctly explains this fact? The glycine anticodon contains the sequence CC, but the 5' base of the anticodon can pair nonspecifically with the 3' base of the codon. The glycine anticodon contains the sequence CC, but the 3' base of the anticodon can pair nonspecifically with the 5' base of the codon. Glycine tRNA has four anticodons, and the appropriate anticodon specifically pairs with the correct codon. There are four tRNAs for glycine, each of which has an anticodon that specifically pairs with the correct codon. all of the above
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
Which of the following mRNA codons could be changed to a stop codon by a single base pair substitution in DNA ? [In other words, if you substitute one of the bases for a diferent one, it will produce a stop codon. Don't overthink this. Just look at the codon as written, and see if changing any one base leads to a stop codon]. 1. UAC (tyrosine) 2. UGG (tryptophan) 3. CGA (arginine) 4. ACU (threonine) A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correct
Which of the following describes a silent mutation that is undetectable in the final protein sequence? Group of answer choices A base change that codes for a chemically different amino acid A base change that results in a different codon for the same amino aci A base change that codes for a stop codon A base change that codes for a chemically similar amino acid
A 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 base
Which of the following mutations is most likely to cause a single amino acid difference during the translation of mRNA into protein? A. Single base-pair insertion B. Single base-pair deletion C. Mutations in regulatory sites D. Base-pair substitution
Which of the following is a true statement concerning codons A codon Will be read by RNA polymerase during transcription A codon is composed of two nucleaotides A codon specifies one amino acid A codon is composed of three amino acids A codon is found in all eukaryotes but not in prokaryotes
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
What do you have a nucleotide triplet codes for codon for UGU ? Identify a base pair substitution that would produce a silent mutation at this codon. Identify a base substitution that would result in a missense mutation at this codon. Identify a base pairing substitution that could produce a non-sense mutation add this codon .