MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How much time is required to inject a copy of the whole Hfr E.coli genome? |
| A. | 24 hrs |
| B. | 30 mins |
| C. | 100 mins |
| D. | 48 hrs |
| Answer» D. 48 hrs | |
| 2. |
The Hfr chromosome is transferred to the F cell in a _____________ fashion. |
| A. | circular |
| B. | coiled |
| C. | dimer |
| D. | linear |
| Answer» E. | |
| 3. |
Which of the following can be used as a measure to construct a linkage map of the Hfr chromosome? |
| A. | frequency of recombination |
| B. | time of entry |
| C. | locus of mutation |
| D. | transfer of F factor |
| Answer» C. locus of mutation | |
| 4. |
Which of the following is true for an Hfr X F cross? |
| A. | frequency of recombination high, transfer of F factor low |
| B. | frequency of recombination high, transfer of F factor high |
| C. | frequency of recombination low, transfer of F factor high |
| D. | frequency of recombination low, transfer of F factor low |
| Answer» B. frequency of recombination high, transfer of F factor high | |
| 5. |
What is the frequency of formation of recombinants in a F+ X F cross? |
| A. | 100 |
| B. | 40 |
| C. | 10 |
| D. | 1 |
| Answer» E. | |
| 6. |
Which of the following cells of E.coli are referred to as F |
| A. | Male cells |
| B. | Female cells |
| C. | Both male and female cells |
| D. | Neither male nor female cells |
| Answer» C. Both male and female cells | |