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Concept explainers
(a)
Interpretation: Sequence of bases on the DNA template strand from which the hnRNA was synthesized has to be drawn.
Concept introduction: hnRNA can be formed by the transcription of DNA. Transcription process occurs in nucleus. DNA strand contains a segment called “gene” which contains the base sequences for production of hnRNA.
(b)
Interpretation: The sequence of bases on the DNA informational strand associated with the DNA template strand has to be stated.
Concept introduction: hnRNA can be formed by the transcription of DNA. Transcription process occurs in the nucleus. DNA strand contains a segment called “gene” which includes the base sequences for production of hnRNA. Information strand is not involved in hnRNA synthesis; it is the complementary strand of the DNA template strand.
(c)
Interpretation: The sequence of bases in the mRNA produced from the hnRNA has to be determined.
Concept introduction: hnRNA can be formed by the transcription of DNA. mRNA carries instructions for the protein synthesis. hnRNA molecules are converted to mRNA by splicesosome.
(d)
Interpretation: The sequence of amino acids in the peptide synthesized from the mRNA has to be stated.
Concept introduction: A three-
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Chapter 11 Solutions
Organic And Biological Chemistry
- Determine each of the following items using the hnRNA nucleotide sequence a. The sequence of bases on the DNA template strand from which the hnRNA was synthesized b. The sequence of bases on the DNA informational strand associated with the DNA template strand. c. The sequence of bases in the mRNA produced from the hnRNA d. The sequence of amino acids in the peptide synthesized from the mRNAarrow_forwardWrite the base sequence for the mRNA that would be formed during transcription from the DNA strand with the base sequence GCCATATTG.arrow_forwardWhat type of RNA has the shortest lifetime in cells?arrow_forward
- Consider the following mRNA base sequence 5CUUCAG3 a. What dipeptide is coded for by this mRNA? b. What dipeptide is formed if a point mutation converts CUU to CUC? c. What dipeptide is formed if a point mutation converts CAG to AAG? d. What dipeptide is formed if a point mutation converts CUU to CUC and CAG to AAG?arrow_forwardConsider the following mRNA base sequence 5ACCCAC3 a. What dipeptide is coded for by this mRNA? b. What dipeptide is formed if a point mutation converts CAC to AAC? c. What dipeptide is formed if a point mutation converts ACC to ACU? d. What dipeptide is formed if a point mutation converts CAC to AAC and ACC to ACU?arrow_forwardIs the trinucleotide in Problem 22-31 found only in DNA, found only in RNA, or found in both DNA and RNA? Explain the basis for your answer.arrow_forward
- Which of the following statements about the genetic code are true and which are false? Correct each false statement. a.Each codon is composed of four bases. b.Some amino acids are represented by more than one carbon. c.All codons represent an amino acid. d.Each living species is thought to have its own unique genetic code. e.The codon AUG at the beginning of a sequence is a signal for protein synthesis to begin at that codon. f.It is not known if the code contains stop signals for protein synthesis.arrow_forward25-7 What are the differences between DNA and RNA?arrow_forwardWhat is the base sequence, specified in the 5-to-3 direction, for a segment of newly formed DNA if it was formed using the following template DNA segments? a. 3 GGCAA 5 b. 5 GTCCG 3 c. 3 ACGTA 5 d. 5 ACGTA 3arrow_forward
- The DNA template strand segment 3TTCAAACCGTAC5 upon transcription and translation produces the amino acid sequence Lys-Phe-Gly-Met. What is the amino acid sequence produced if a frameshift mutation occurs in which the third A base in the original DNA sequence is removed?arrow_forwardDNA Complementarity Draw the complementary strand for the DNA shown.arrow_forwardIn the replication of a DNA molecule, two daughter molecules, Q and R, are formed. The following base sequence is part of the newly formed strand in daughter molecule Q. 5ACTTAG3 Indicate the corresponding base sequence in a. the newly formed strand in daughter molecule R. b. the parent strand in daughter molecule Q. c. the parent strand in daughter molecule R.arrow_forward
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