MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A normal plant suddenly started reproducing parthengentically. the number of chromosomes of the second generation compared to the parent plant will be____________________? |
| A. | Double |
| B. | One half |
| C. | One fourth |
| D. | Same |
| Answer» E. | |
| 2. |
A mutation is a change in_________________? |
| A. | Chromosome number |
| B. | RNA |
| C. | DNA |
| D. | Chromosome structure |
| Answer» B. RNA | |
| 3. |
A mutation which kills 50% of the individual that carry the mutation is known as_________________? |
| A. | Lethal mutation |
| B. | Sub lethal mutation |
| C. | Vital mutation |
| D. | Sub-vital mutation |
| Answer» C. Vital mutation | |
| 4. |
A mutant organism (bacterium) that will not grow on a minimal medium does so on the addition of some grown factor is known as __________________? |
| A. | Autotrophy |
| B. | Auxotroph |
| C. | Axenema |
| D. | Heterotroph |
| Answer» B. Auxotroph | |
| 5. |
A heterogeneous population include_______________? |
| A. | Composites |
| B. | Multi lines |
| C. | Synthetic |
| D. | All the above |
| Answer» E. | |
| 6. |
A healthy plant not selling seed may be due to____________________? |
| A. | Self incompatibility |
| B. | Male sterility |
| C. | Female sterility |
| D. | All the above |
| Answer» C. Female sterility | |
| 7. |
A genetic element which can exist in more than one of the two alternative forms is known as__________________? |
| A. | Episome |
| B. | Disome |
| C. | Mecrosome |
| D. | Peroxisome |
| Answer» B. Disome | |
| 8. |
A gene which exhibits higher mutation rate than others is referred as___________________? |
| A. | Mutator gene |
| B. | Antimutalor gene |
| C. | Mutable gene |
| D. | Hot spot |
| Answer» C. Mutable gene | |
| 9. |
A gene which enhances the natural mutations rate of another gene in the same genome is kanown as___________________? |
| A. | Mutable gene |
| B. | Mutator gene |
| C. | Recepror gene |
| D. | Articulator gene |
| Answer» B. Mutator gene | |
| 10. |
A dihybrid ratio is____________________? |
| A. | 9:3:3:1 |
| B. | 1:1:1:1 |
| C. | 3:1 |
| D. | 27:9:9:3:3:3:1 |
| Answer» B. 1:1:1:1 | |
| 11. |
A cross of hybrid with one of its recessive parent is termed____________________? |
| A. | Test cross |
| B. | Backcross |
| C. | Hybridization |
| D. | Trihybrid |
| Answer» B. Backcross | |
| 12. |
A cross of unlike organisms is termed as____________________? |
| A. | Hybrid |
| B. | Heterosis |
| C. | Backcross |
| D. | None of the above |
| Answer» B. Heterosis | |
| 13. |
A cross of hybrid with one of its parents is termed as____________________? |
| A. | Hybridization |
| B. | Backcross |
| C. | Test cross |
| D. | Biohybrid |
| Answer» C. Test cross | |
| 14. |
A child is born with an extra chromosome in each of it cells, the reason is___________________? |
| A. | Non-disjunction |
| B. | Segregation |
| C. | Hybridization |
| D. | Crossing over |
| Answer» B. Segregation | |
| 15. |
A bisexual flower which never opens in its lifespan is called___________________? |
| A. | Cleistogamous |
| B. | Dichogamous |
| C. | Heterogamous |
| D. | Homogamous |
| Answer» B. Dichogamous | |