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Genetics Question 2
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- Question #3 Silent Mutation Part 1What is the result of a silent mutation on a protein?Part 2Given what you know about the genetic code, why did you give the response you did in part one? Please explain in no more than two sentences.QUESTION 25 What is the most common type of DNA sequence present in eukaryotic genomes? A. Repetitive DNA sequences B. Minisatellites C. Exons of genes encoding proteins D. Introns of genes encoding proteinsQUESTION 33 33. Which defines a codon? A. a protein that beins transcription by breaking apart H bonds B. a free-floating base that attaches to an open DNA strand C. the genetic code word of three bases on mRNA that specify one amino acid D. the strong bond between two complementary nitrogen bases QUESTION 34 34. What is the role of tRNA during translation? A. carry amino acids to the mRNA for correct placement into the protein chain B. carry ribosomes to the site of protein synthesis C. break apart mRNA and send it back to the nucleus so that it can be reused D. bond to open the DNA strand to carry the code for protein synthesis out of the nucleus QUESTION 35 35. Which of the following changes would be expected if a CAUUUG sequences of bases mutated to CACUUG? A. the amino acid sequence would be shorter than expected B. the identity of 1 amino acid would change C. the identity of more than 1 amino acid…
- QUESTION 27 Which of the following methods can be used to compare the amounts of one specific mRNA that is expressed by two different cell lines? A. Immunohistochemistry B. Western blotting C. Polymerase chain reaction (PCR) D. ImmunocytochemistryQuestion 1: Translate the mRNA codon AGC a) Transcribe the DNA sequence AGC TAC CAG into mRNA Question 2: Translate the DNA sequence AAT GAC CCG into an amino acid sequence, remembering to translate from the mRNA code. Not the DNA, not the tRNA! a) Describe one thing you learned from practicing transcription and translation.QUESTION 22 Which type of mutation results in no change in amino acid sequence for the protein? Silent Missense Nonsense Frameshift
- QUESTION NO. 1 Base excision repair A. is used only for bases that have been deaminated. B. uses enzymes called DNA glycosylases to generate an abasic sugar site. C. removes about 10 to 15 nucleotides. D. does not require an endonuclease. E. recognizes a bulky lesion. QUESTION NO. 2 Termination of a prokaryotic transcriptA. is a random process. B. requires the presence of the rho subunit of the holoenzyme. C. does not require rho factor if the end of the gene contains a G-C rich palindrome. D. is most efficient if there is an A-T-rich segment at the end of the gene. E. requires an ATPase in addition to rho factor. QUESTION NO. 3 Eukaryotic transcription A. is independent of the presence of upstream consensus sequences. B. may involve a promoter located within the region transcribed rather than upstream. C. requires a separate promoter region for each of the three ribosomal RNAs transcribed. D. requires that…question 13 The nucleic acid of a virus is A DNA only B RNA only C both DNA and RNA D either DNA and RNAQuestion #1 DNA Part AHow can an isolated DNA bind to DNA on a column? What property allows the column to do this? Short response. Part BGiven your answer part A, why would you use RNase (AKA Ribonuclease) to treat a DNA sample? Explain your answer in the context of what you know about RNA. Short response.
- Question 1. The nitrogenous base content of a sample of DNA was found to be 34% adenine. Determine the amounts of the other three bases in this sample.QUESTION 22 The DNA sequences that are most conserved between human and mouse would most likely be located in: A Highly-repeated sequences, such as microsatellite regions B Highly repeated sequences, such as Alu sequences C Moderately-repeated non-coding sequences D Coding regions of single-copy genesQUESTION 19 Which of the following is the start codon? GUC CCC UAG AUG