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Questions and Answers
What type of mutation results from a base being inserted or deleted in a DNA sequence, which subsequently alters the entire amino acid sequence?
What type of mutation results from a base being inserted or deleted in a DNA sequence, which subsequently alters the entire amino acid sequence?
Which repair mechanism do DNA glycosylases specifically participate in?
Which repair mechanism do DNA glycosylases specifically participate in?
What is the term for a mutation that does not change the resulting amino acid due to a codon alteration?
What is the term for a mutation that does not change the resulting amino acid due to a codon alteration?
What is the post-replicative DNA repair pathway commonly known as?
What is the post-replicative DNA repair pathway commonly known as?
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Why does a mutation in the P53 gene increase cancer risk?
Why does a mutation in the P53 gene increase cancer risk?
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Which of the following statements about the P53 protein is true?
Which of the following statements about the P53 protein is true?
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What type of damage does UV radiation typically cause in DNA?
What type of damage does UV radiation typically cause in DNA?
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What is the likely cause of Xeroderma pigmentosum based on its relation to DNA repair?
What is the likely cause of Xeroderma pigmentosum based on its relation to DNA repair?
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What is the role of DNA gyrase during DNA replication?
What is the role of DNA gyrase during DNA replication?
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Which enzyme is specifically responsible for initiating RNA synthesis at the replication site?
Which enzyme is specifically responsible for initiating RNA synthesis at the replication site?
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How does DNA synthesis occur in terms of the direction of strand growth?
How does DNA synthesis occur in terms of the direction of strand growth?
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What structures, indicated by the letter E in a DNA replication diagram, are involved in the process?
What structures, indicated by the letter E in a DNA replication diagram, are involved in the process?
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What facilitates the movement of DNA molecules through agarose gel in electrophoresis?
What facilitates the movement of DNA molecules through agarose gel in electrophoresis?
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Which of the following accurately describes how eukaryotic chromosomes are replicated?
Which of the following accurately describes how eukaryotic chromosomes are replicated?
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Which enzyme is mainly responsible for unwinding the DNA double helix during replication?
Which enzyme is mainly responsible for unwinding the DNA double helix during replication?
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What is a key reason for the specific directionality (5' to 3') of DNA synthesis?
What is a key reason for the specific directionality (5' to 3') of DNA synthesis?
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What activates transcription in the lac operon when lactose is present?
What activates transcription in the lac operon when lactose is present?
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Which statement about eukaryotic gene expression is correct?
Which statement about eukaryotic gene expression is correct?
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What is the correct sequence of structures in a typical mRNA molecule synthesized in a prokaryotic cell?
What is the correct sequence of structures in a typical mRNA molecule synthesized in a prokaryotic cell?
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What role does the regulatory region play in a bacterial operon?
What role does the regulatory region play in a bacterial operon?
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What is a primary reason only one strand of DNA is used for transcription?
What is a primary reason only one strand of DNA is used for transcription?
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Which statement is true regarding introns in human genes?
Which statement is true regarding introns in human genes?
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What modification is made to the 3' end of eukaryotic pre-mRNA molecules?
What modification is made to the 3' end of eukaryotic pre-mRNA molecules?
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Which of the following is false regarding DNA transcription?
Which of the following is false regarding DNA transcription?
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Which of the following statements about the role of histone acetylases is accurate?
Which of the following statements about the role of histone acetylases is accurate?
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If thymine constitutes 25% of the bases in a DNA sample, what is the percentage of guanine in that sample?
If thymine constitutes 25% of the bases in a DNA sample, what is the percentage of guanine in that sample?
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Which statement accurately describes the complement of the DNA strand 5'AGATCCG-3'?
Which statement accurately describes the complement of the DNA strand 5'AGATCCG-3'?
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Which of the following sugars is specifically found in RNA?
Which of the following sugars is specifically found in RNA?
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Which of the following components is mismatched with its function in a gene?
Which of the following components is mismatched with its function in a gene?
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What is the function of RNA polymerase during transcription?
What is the function of RNA polymerase during transcription?
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What abnormality is most likely linked to the shorter P53 protein in a 28-year-old man?
What abnormality is most likely linked to the shorter P53 protein in a 28-year-old man?
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Which statement regarding mitochondrial DNA is incorrect?
Which statement regarding mitochondrial DNA is incorrect?
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What prevents the reformation of the double helix during DNA replication once the strands are separated?
What prevents the reformation of the double helix during DNA replication once the strands are separated?
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At which end does each Okazaki fragment begin?
At which end does each Okazaki fragment begin?
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Which amino acid is virtually always found at the N-terminal of a newly-formed protein?
Which amino acid is virtually always found at the N-terminal of a newly-formed protein?
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What does the anticodon 3'-GAU-5' correspond to?
What does the anticodon 3'-GAU-5' correspond to?
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How does the first nucleotide at the 5' end of a new mRNA chain differ from other nucleotides in the chain?
How does the first nucleotide at the 5' end of a new mRNA chain differ from other nucleotides in the chain?
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What is the role of elongation factor EF-Tu in translation?
What is the role of elongation factor EF-Tu in translation?
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What does histone deacetylase do in relation to gene expression?
What does histone deacetylase do in relation to gene expression?
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Which of the following statements about the lac operon is false?
Which of the following statements about the lac operon is false?
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Which dye is commonly used to visualize DNA on agarose gel under UV light?
Which dye is commonly used to visualize DNA on agarose gel under UV light?
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What are the genetic strands called that result from the separation of sister chromatids?
What are the genetic strands called that result from the separation of sister chromatids?
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What group confers a negative charge to DNA molecules, aiding in agarose gel electrophoresis?
What group confers a negative charge to DNA molecules, aiding in agarose gel electrophoresis?
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During which phase of meiosis do bivalent chromosomes align?
During which phase of meiosis do bivalent chromosomes align?
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What key event in meiosis can lead to the formation of trisomies and monosomies?
What key event in meiosis can lead to the formation of trisomies and monosomies?
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Which statement about nondisjunction is NOT accurate?
Which statement about nondisjunction is NOT accurate?
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Which human disease is least likely to be linked with aneuploidy?
Which human disease is least likely to be linked with aneuploidy?
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What is the final concentration of a 1M MgCl2 stock solution needed to achieve 8mM in a 25ul PCR reaction?
What is the final concentration of a 1M MgCl2 stock solution needed to achieve 8mM in a 25ul PCR reaction?
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