MCQ 11 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: $\text{YAC}$ vectors have been exploited extensively in the mapping of large genomes.
Reason: $\text{YAC}$ vectors have a composite structure made of bacteriophage and plasmid.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- ✓
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: C. Assertion is true but reason is false.
View full question & answer→MCQ 21 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: The insertion of $\text{DNA}$ fragment into $\text{pBR 322}$ plasmid using enzyme Pst $I$ or Pvu $I$ make ampicillin resistant gene non functional.
Reason: Bacterial cells containing recombinant $\text{pBR 322}$ is unable to grow in the presence of ampicillin.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- ✓
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: B. Both assertion and reason are true but reason is not the correct explanation of assertion.
View full question & answer→MCQ 31 Mark
Directions: In the following questions, the Assertions $(A)$ and Reason$(s) (R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion: Recognition site should be preferably single and responsive to commonly used restriction enzyme.
Reason: In $\text{pBR 322}$ alien $\text{DNA}$ is ligated generally in the area of Bam $- \text{HI}$ site of tetracycline resistance gene.
- A
If both the assertion and the reason are true and the reason is a correct explanation of the assertion.
- ✓
If both the assertion and reason are true but the reason is not a correct explanation of the assertion.
- C
If the assertion is true but the reason is false.
- D
If both the assertion and reason are false.
AnswerCorrect option: B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion.
View full question & answer→MCQ 41 Mark
Directions: In the following questions, the Assertions $(A)$ and Reason$(s) (R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion: A bacterial cell with no restriction enzymes will be easily infected and lysed by bacteriophages.
Reason: Restriction enzymes catalyse synthesis of protective coat around bacterial cell that prevents bacteriophage attack.
- A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
- B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
- ✓
Assertion is correct but Reason is incorrect.
- D
Both Assertion and Reason are incorrect.
AnswerCorrect option: C. Assertion is correct but Reason is incorrect.
View full question & answer→MCQ 51 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Bacteriophage vectors are more advantageous than plasmid vectors.
Reason: Bacteriophage vectors can be easily detected at the time of cloning experiments.
- ✓
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: A. Both assertion and reason are true and reason is the correct explanation of assertion.
View full question & answer→MCQ 61 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Type i restriction endonucleases are not used in recombinant $\text{DNA}$ technology.
Reason: Type i restriction endonucleases recognise specific sites within the $\text{DNA}$ but do not cut these sites.
- ✓
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: A. Both assertion and reason are true and reason is the correct explanation of assertion.
View full question & answer→MCQ 71 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Selectable marker is meant for distinguishing a recombinant from non$-$recombinant.
Reason: Every recombinant can flourish in medium having both ampicillin and tetracycline, while the non$-$ recombinants cannot.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- ✓
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: C. Assertion is true but reason is false.
View full question & answer→MCQ 81 Mark
Directions: In the following questions, the Assertions $(A)$ and Reason$(s) (R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion: Restriction endonucleases recognize short palindromic sequence and cut at specific sites.
Reason: When a restriction endonuclease acts on a palindrome, it cleaves both the strands of $\text{DNA}$ molecule.
- A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
- ✓
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
- C
Assertion is correct but Reason is incorrect.
- D
Both Assertion and Reason are incorrect.
AnswerCorrect option: B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
View full question & answer→MCQ 91 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Restriction enzymes cut the strand of $\text{DNA}$ to produce sticky ends or blunt ends.
Reason: Stickiness of the ends facilitates the action of the enzyme $\text{DNA}$ polymerase.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- ✓
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: C. Assertion is true but reason is false.
View full question & answer→MCQ 101 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Both the passenger and vehicle $\text{DNAs}$ are treated separately with separate restriction endonuclease.
Reason: Ligation is done by the use of alkaline phosphatase and $\text{DNA}$ ligase.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- ✓
Both assertion and reason are false.
AnswerCorrect option: D. Both assertion and reason are false.
View full question & answer→MCQ 111 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: In recombinant $\text{DNA}$ technology, human genes are often transferred into bacteria $($prokaryotes$)$ or yeast $($eukaryote$).$
Reason: Both bacteria and yeast multiply very fast to form huge populations which express the desired gene.
- ✓
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: A. Both assertion and reason are true and reason is the correct explanation of assertion.
View full question & answer→MCQ 121 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Bacterial cells are made competent by treating them with specific concentration of a divalent cation.
Reason: Treatment of bacterial cell with a divalent cation increases the efficiency with which $\text{DNA}$ enters the bacterium through pores in its cell wall.
- ✓
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: A. Both assertion and reason are true and reason is the correct explanation of assertion.
View full question & answer→MCQ 131 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Soil inhabiting bacterium Agrobacterium tumefaciens is called a natural plant genetic engineer.
Reason: Agrobacterium tumefaciens produce crown galls in several dicot plants.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- ✓
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: B. Both assertion and reason are true but reason is not the correct explanation of assertion.
View full question & answer→MCQ 141 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Restriction endonuclease recognises palindromic sequence in $\text{DNA}$ and cuts them.
Reason: Palindromic sequence has two unique recognition sites $\text{Pst I}$ and $\text{Pvu I}$ recognised by restriction endonuclease.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- B
Both assertion and reason are true but reason is not the correct explanation of assertion.
- ✓
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: C. Assertion is true but reason is false.
View full question & answer→MCQ 151 Mark
Directions: In the following questions, the Assertions $(A)$ and Reason$(s) (R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion: $\text{PCR}$ can detect very low amounts of $\text{DNA}$ and is now routinely used to defect $\text{HIV}$ in suspected $\text{AIDS}$ patient.
Reason: $\text{PCR}$ is a powerful technique to identify many other genetic disorders.
- A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
- ✓
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
- C
Assertion is correct but Reason is incorrect.
- D
Both Assertion and Reason are incorrect.
AnswerCorrect option: B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
View full question & answer→MCQ 161 Mark
Two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: $\text{DNA}$ fingerprinting involves identifying differences in specific regions of $\text{DNA}$ sequence.
Reason: $\text{DNA}$ fingerprinting is the basis of paternity testing.
- A
Both assertion and reason are true and reason is the correct explanation of assertion.
- ✓
Both assertion and reason are true but reason is not the correct explanation of assertion.
- C
Assertion is true but reason is false.
- D
Both assertion and reason are false.
AnswerCorrect option: B. Both assertion and reason are true but reason is not the correct explanation of assertion.
View full question & answer→