Homework Answers
Sorry dear, you are almost correct but one option is wrong.
If a wrong base added to the growing DNA strand then:- (b)using 3' → 5' exonuclease activity DNA pol III remove incorrect base from growing DNA strand. (d) Excision repair by DNA polymerase I
(e) Methyl Directed Mismatch repair by DNA poly III.
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45 If a base is misread, and in consequence, the wrong nucleotide is written in the...
If a base is misread, and in consequence, the wrong nucleotide is written in the nascent...
If a base is misread, and in consequence, the wrong nucleotide is written in the nascent DNA strand, which of the following mechanisms could correct the error? Select all that apply Select one or more: a. Excision repair by DNA polymerase III b. DNA proofreading by polymerase III c. Excision repair by DNA polymerase d. Mismatch repair by DNA polymerase e. Mismatch repair by DNA polymerase III
Question 43 Not yet answered The sequence below is the anticodon of a tRNA molecule. What...
Question 43 Not yet answered The sequence below is the anticodon of a tRNA molecule. What amino acid do you expect to find bound to the tRNA? Use the 3 letter code for the aminoacid name (i.e gly for glycine), case is not important. 5-tcg-3 Points out of 2.50 P Flag question Answer: Question 44 Not yet answered Points out of 2.50 If a base is misread, and in consequence, the wrong nucleotide is written in the nascent DNA strand,...
21. In DNA replication, new nucleotides are added a. To the 5' end of each nascent...
21. In DNA replication, new nucleotides are added a. To the 5' end of each nascent strand b. To the 3'end of each nascent strand To both ends of each nascent strand d. To the 5' end of the continuous strand and the 3' end of the discontinuous strand e. To the end of the continuous strand and the end of discontinuous strand fragments 22. DNA unwinding is done by a. Ligase b. Helicase c. Topoisomerase dHexonuclease 23. Proofreading of...
A) Which property of DNA replication enables accurate mismatch repair to prevent mutation? a) Adenine methylase...
A) Which property of DNA replication enables accurate mismatch repair to prevent mutation? a) Adenine methylase lags behind the DNA polymerase b) the proofreading ability of DNA polymerase c) the error-free nature of DNA pol. III d) the sister chromatid can be used as a template B) which DNA repair mechanism uses the sister chromatid as a template for repair? a) nucleotide excision repair b) double-stranded break repair c) postreplication repair d) base excision repair C) indicate which substitutions require...
Question 3 1 pts Errors originating from DNA polymerase slippage are associated with Lynch syndrome Fragile...
Question 3 1 pts Errors originating from DNA polymerase slippage are associated with Lynch syndrome Fragile X Xeroderma pigmentosum Cockayne syndrome Huntingtons disease Question 4 1 pts Base excision repair and nucleotide excision repair are similar in that Both use the undamaged strand as template Both are "error free" repair mechanisms The final steps of the repair process are shared Both resolve double-stranded DNA breaks
Below (see diagram) is a human karyotype: A) What is the sex of this individual? B)...
Below (see diagram) is a human karyotype:
A) What is the sex of this individual?
B) Which of the following best describes the chromosomes in the
karyotype: 1N, 2N, 4N, 23N, 46N?
C) How many chromatids are present in this karyotype?
Explain.
D) The chromosomes here are stained with Giesma stain, and
distinct light and dark bands can be seen.
What does the staining pattern help to identify?
E) What chromosomal abnormality/abnormalities do you observe in
this karyotype? (Be as...
Ul Ehé question paper. 1. Mutations can be caused by: a) tautomeric shifts b) UV light...
Ul Ehé question paper. 1. Mutations can be caused by: a) tautomeric shifts b) UV light c) chemical changes to bases such as deaminatior C) all the above 2. The start of a wild type mRNA was AUGCCCAAGAccA mu tation This type of change resulted in the sequence AUGUCCAAGACC. is called a a) missense一®.frameshift mutation. 3. The typical rate of mutation for a human gene is per generation. a) 103 c) 10 d) 10-11 e) 104 4. If a hypothetical...
For the next group of questions consider a diploid cell from a eukaryotic organism with a...
For the next group of questions consider a diploid cell from a eukaryotic organism with a total of ten chromosomes. After one round of the cell cycle is complete you observe a total of four daughter cells. During this cell division occurred and the resulting daughter cells are. mitosis; haploid with ten total chromosomes each mitosis; diploid with five total chromosomes each meiosis; diploid with ten total chromosomes each meiosis; haploid with five total chromosomes each Before the cell divided,...
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...
If a base is misread, and in consequence, the wrong nucleotide is written in the nascent DNA strand, which of the following mechanisms could correct the error? Select all that apply Select one or more: a. Excision repair by DNA polymerase III b. DNA proofreading by polymerase III c. Excision repair by DNA polymerase d. Mismatch repair by DNA polymerase e. Mismatch repair by DNA polymerase III
Question 43 Not yet answered The sequence below is the anticodon of a tRNA molecule. What amino acid do you expect to find bound to the tRNA? Use the 3 letter code for the aminoacid name (i.e gly for glycine), case is not important. 5-tcg-3 Points out of 2.50 P Flag question Answer: Question 44 Not yet answered Points out of 2.50 If a base is misread, and in consequence, the wrong nucleotide is written in the nascent DNA strand,...
21. In DNA replication, new nucleotides are added a. To the 5' end of each nascent strand b. To the 3'end of each nascent strand To both ends of each nascent strand d. To the 5' end of the continuous strand and the 3' end of the discontinuous strand e. To the end of the continuous strand and the end of discontinuous strand fragments 22. DNA unwinding is done by a. Ligase b. Helicase c. Topoisomerase dHexonuclease 23. Proofreading of...
Question 3 1 pts Errors originating from DNA polymerase slippage are associated with Lynch syndrome Fragile X Xeroderma pigmentosum Cockayne syndrome Huntingtons disease Question 4 1 pts Base excision repair and nucleotide excision repair are similar in that Both use the undamaged strand as template Both are "error free" repair mechanisms The final steps of the repair process are shared Both resolve double-stranded DNA breaks
Below (see diagram) is a human karyotype:
A) What is the sex of this individual?
B) Which of the following best describes the chromosomes in the
karyotype: 1N, 2N, 4N, 23N, 46N?
C) How many chromatids are present in this karyotype?
Explain.
D) The chromosomes here are stained with Giesma stain, and
distinct light and dark bands can be seen.
What does the staining pattern help to identify?
E) What chromosomal abnormality/abnormalities do you observe in
this karyotype? (Be as...
Ul Ehé question paper. 1. Mutations can be caused by: a) tautomeric shifts b) UV light c) chemical changes to bases such as deaminatior C) all the above 2. The start of a wild type mRNA was AUGCCCAAGAccA mu tation This type of change resulted in the sequence AUGUCCAAGACC. is called a a) missense一®.frameshift mutation. 3. The typical rate of mutation for a human gene is per generation. a) 103 c) 10 d) 10-11 e) 104 4. If a hypothetical...
For the next group of questions consider a diploid cell from a eukaryotic organism with a total of ten chromosomes. After one round of the cell cycle is complete you observe a total of four daughter cells. During this cell division occurred and the resulting daughter cells are. mitosis; haploid with ten total chromosomes each mitosis; diploid with five total chromosomes each meiosis; diploid with ten total chromosomes each meiosis; haploid with five total chromosomes each Before the cell divided,...
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...
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