9. Shown below is a list of types of repair systems or repair molecules (a-d) and...
9. Shown below is a list of types of repair systems or repair molecules (a-d) and types of DNA damage or mutations (1-4). On the blank line following each type of damage, write the letter(s) of all repair systems that can repair that particular type of damage.
a) Direct repair
b) Base-excision repair
c) Double-strand break repair
d) Nucleotide-excision repair
1) Lesions caused by intercalating agents __________
2) Pyrimidine dimers B
3) Deamination __________
4) X-ray damage to chromosomes __________
Homework Answers
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9. Shown below is a list of types of repair systems or repair
molecules (a-d) and...
Answer both questions please. The function of the 5' RNA cap is to: Prevent degradation and...
Answer both questions please.
The function of the 5' RNA cap is to: Prevent degradation and act as a ribosomal recognition site Protect against splicing Ensure that the central dogma is preserved by not allowing reverse transcription Prevent re-replication Question 30 3 pts Defects in nucleotide excision repair will likely prevent effective repair of what type of DNA damage? Cytidine deamination Double strand breaks Tautomerization Pyrimidine dimers
13) The number of new mutations in a given gene per cell generation is called? B)...
13) The number of new mutations in a given gene per cell generation is called? B) mutation rate C) recombination frequeney 14) A type of spontaneous mutation that occur when a purine base is removed from the DNA is A) deamination D) alkylate bases В) apurination E) base analog C) thymine dimers 15) A type of spontaneous mutation that involves a temporary change in the base conformation because the keto group may change to an enol functional group or amino...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision Repair involves recognition of distortions in the DNA double helix rather than specific base changes. A. True. B False Homologous recombination does not occur in prokaryotic cells. A. True. B False Many chemotherapeutic agents are paradoxically DNA damaging agents A. True. B False Meiot.c recombination starts with, double-strand break caused by errors In DNA replication A. True. B False ONA replication origins are typically...
17. A diploid plant is a dihybrid for flower color (gene “R”) and leaf size (gene...
17. A diploid plant is a dihybrid for flower color (gene “R”)
and leaf size (gene “L”). Its
phenotype is red flowers and large leaves. This plant is crossed to
a tester plant (which has
white flowers and small leaves). The progeny is as follows:
23 Red, large
25 White, small
230 Red, small
235 White, large
What can be concluded about the linkage relationship of the loci in
the dihybrid parent?
A) Genes R and L are unlinked
B)...
2 For each of the following DNA lesions, indicate which repair pathway would be most directly...
2 For each of the following DNA lesions, indicate which repair pathway would be most directly involved in repairing the damage. For this question, select the best answer for each. b. MMR 8-oxo-G G:T base pair cisplatin-induced interstrand crosslink a. BER C. NER d. HR e NHEJ _UV-induced 6-4 photoproduct (pyrimidine dimer) X-ray induced double strand break in a neuron collapsed replication fork _deamination-induced uracil
can you guys please give me the correct answers and explain why? 3. Which of the...
can you guys please give me the correct answers and explain
why?
3. Which of the following statements is CORRECT? A. Exposure of E.coli to UV light greatly increases the frequency of cytosine deamination B. Mutagens that intercalate into the double helix lead to the formation of thymine dimers. C) Oxidative damage to DNA usually leads to the formation of frameshift mutations. D. Some alkylating agents are mutagenic because they chemically modify amino acids in the active site of DNA...
answer all the questions 1) All of the following contribute to promoter binding by RNA polymerase...
answer all the questions
1) All of the following contribute to promoter binding by RNA polymerase I in bacteria except: a)-10 consensus sequence b)-35 consensus sequence c) rho factor d) sigma factor e) none of the above 2) Common structural changes or lesions found in DNA after exposure to ultraviolet light are: a) thymine dimers b) cytosine dimers c) purine dimers d) adenine dimers e) none of the above 3) What is the function of the sigma subunit in the...
please andwer all the questions 7) Describe at least two major intramolecular forces that help stabilize...
please andwer all the questions
7) Describe at least two major intramolecular forces that help stabilize the DNA double-helix? 8) In mammalian female cells, the DNA of the Barr Body is characteristic of: a) Heterochromatin b) Euchromatin c) Dispersed chromatin d) Patemal DNA ONLY e) Maternal DNA ONLY 9) When used to describe the RNA polymerases' activity, the term “processivity” refers to: a) The ability to recognize and bind to a promoter region b) The ability to remain attached to...
Explain the discovery, mechanism of action and function of AID (activation-induced deaminase)? SOMATIC HYPERMUTATION (Figures 7...
Explain the discovery, mechanism of action and function of AID
(activation-induced deaminase)?
SOMATIC HYPERMUTATION (Figures 7 and 8). Indeed, the discovery of AID provided the missing MSH2-deficient mice had previously been taken to indicate that somatic mutation is initiated by diversification at C:G pairs with MSH2-mediated recognition then triggering a subsequent stage of diversification at A:T pairs. Such a two-stage model was supportedations by the observation that CG-biased mutation was also a characteristic of somatic mutation in B-c nes9 and...
can u tell me if these answers are correct please!??!!! Choose the best answer for the...
can
u tell me if these answers are correct please!??!!!
Choose the best answer for the following questions. Place your answer on the line. If your answer is not on the line.it does not count 1 Mender's discovery that characteristics are inherited due to the transmission of hereditary factors resulted from his (1) dissections to determine how fertilization occurs in pea plants (2analysis of the offspring produced from many pea plant crosses (3) careful microscopic examinations of genes and chromosomes...
Answer both questions please.
The function of the 5' RNA cap is to: Prevent degradation and act as a ribosomal recognition site Protect against splicing Ensure that the central dogma is preserved by not allowing reverse transcription Prevent re-replication Question 30 3 pts Defects in nucleotide excision repair will likely prevent effective repair of what type of DNA damage? Cytidine deamination Double strand breaks Tautomerization Pyrimidine dimers
13) The number of new mutations in a given gene per cell generation is called? B) mutation rate C) recombination frequeney 14) A type of spontaneous mutation that occur when a purine base is removed from the DNA is A) deamination D) alkylate bases В) apurination E) base analog C) thymine dimers 15) A type of spontaneous mutation that involves a temporary change in the base conformation because the keto group may change to an enol functional group or amino...
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision Repair involves recognition of distortions in the DNA double helix rather than specific base changes. A. True. B False Homologous recombination does not occur in prokaryotic cells. A. True. B False Many chemotherapeutic agents are paradoxically DNA damaging agents A. True. B False Meiot.c recombination starts with, double-strand break caused by errors In DNA replication A. True. B False ONA replication origins are typically...
17. A diploid plant is a dihybrid for flower color (gene “R”)
and leaf size (gene “L”). Its
phenotype is red flowers and large leaves. This plant is crossed to
a tester plant (which has
white flowers and small leaves). The progeny is as follows:
23 Red, large
25 White, small
230 Red, small
235 White, large
What can be concluded about the linkage relationship of the loci in
the dihybrid parent?
A) Genes R and L are unlinked
B)...
2 For each of the following DNA lesions, indicate which repair pathway would be most directly involved in repairing the damage. For this question, select the best answer for each. b. MMR 8-oxo-G G:T base pair cisplatin-induced interstrand crosslink a. BER C. NER d. HR e NHEJ _UV-induced 6-4 photoproduct (pyrimidine dimer) X-ray induced double strand break in a neuron collapsed replication fork _deamination-induced uracil
can you guys please give me the correct answers and explain
why?
3. Which of the following statements is CORRECT? A. Exposure of E.coli to UV light greatly increases the frequency of cytosine deamination B. Mutagens that intercalate into the double helix lead to the formation of thymine dimers. C) Oxidative damage to DNA usually leads to the formation of frameshift mutations. D. Some alkylating agents are mutagenic because they chemically modify amino acids in the active site of DNA...
answer all the questions
1) All of the following contribute to promoter binding by RNA polymerase I in bacteria except: a)-10 consensus sequence b)-35 consensus sequence c) rho factor d) sigma factor e) none of the above 2) Common structural changes or lesions found in DNA after exposure to ultraviolet light are: a) thymine dimers b) cytosine dimers c) purine dimers d) adenine dimers e) none of the above 3) What is the function of the sigma subunit in the...
please andwer all the questions
7) Describe at least two major intramolecular forces that help stabilize the DNA double-helix? 8) In mammalian female cells, the DNA of the Barr Body is characteristic of: a) Heterochromatin b) Euchromatin c) Dispersed chromatin d) Patemal DNA ONLY e) Maternal DNA ONLY 9) When used to describe the RNA polymerases' activity, the term “processivity” refers to: a) The ability to recognize and bind to a promoter region b) The ability to remain attached to...
Explain the discovery, mechanism of action and function of AID
(activation-induced deaminase)?
SOMATIC HYPERMUTATION (Figures 7 and 8). Indeed, the discovery of AID provided the missing MSH2-deficient mice had previously been taken to indicate that somatic mutation is initiated by diversification at C:G pairs with MSH2-mediated recognition then triggering a subsequent stage of diversification at A:T pairs. Such a two-stage model was supportedations by the observation that CG-biased mutation was also a characteristic of somatic mutation in B-c nes9 and...
can
u tell me if these answers are correct please!??!!!
Choose the best answer for the following questions. Place your answer on the line. If your answer is not on the line.it does not count 1 Mender's discovery that characteristics are inherited due to the transmission of hereditary factors resulted from his (1) dissections to determine how fertilization occurs in pea plants (2analysis of the offspring produced from many pea plant crosses (3) careful microscopic examinations of genes and chromosomes...
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