MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
You cross two heterozygous disc shaped squash. What will be the ratio obtained? |
| A. | 1:2:1 |
| B. | 3:1 |
| C. | 9:3:3:1 |
| D. | 9:6:1 |
| Answer» E. | |
| 2. |
If you cross two sphere shaped squash, you always get a disc. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
If you cross a true breeding long with a true breeding disc shaped squash, what will you get in the F1? |
| A. | Disc |
| B. | Sphere |
| C. | Long |
| D. | Disc and long in 3:1 |
| Answer» B. Sphere | |
| 4. |
IF_YOU_CROSS_A_TRUE_BREEDING_LONG_WITH_A_TRUE_BREEDING_DISC_SHAPED_SQUASH,_WHAT_WILL_YOU_GET_IN_THE_F1??$ |
| A. | Disc |
| B. | Sphere |
| C. | Long |
| D. | Disc and long in 3:1 |
| Answer» B. Sphere | |
| 5. |
You cross two heterozygous disc shaped squash. What will be the ratio obtained?$ |
| A. | 1:2:1 |
| B. | 3:1 |
| C. | 9:3:3:1 |
| D. | 9:6:1 |
| Answer» E. | |
| 6. |
If you cross two sphere shaped squash, you always get a disc.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
The cross between a true breeding sphere shaped and a long shaped squash gives 30 sphere squash in F2. What is the total number of expected progeny? |
| A. | 30 |
| B. | 40 |
| C. | 50 |
| D. | 60 |
| Answer» C. 50 | |
| 8. |
Which one of the following summer squash would be true breeding? |
| A. | Sphere |
| B. | Disc |
| C. | Long |
| D. | Short |
| Answer» D. Short | |
| 9. |
In summer squash if you cross different varieties of true breeding sphere shaped squash, you get a disk shaped progeny. What phenomenon is seen here? |
| A. | Gene interaction |
| B. | Epistasis |
| C. | Multiple allele |
| D. | Codominance |
| Answer» B. Epistasis | |
| 10. |
If a true breeding rose combed chicken is crossed to walnut combed chicken, what are the only possibilities of the F1 progeny? |
| A. | Walnut |
| B. | Rose |
| C. | Walnut or rose |
| D. | Walnut or rose or pea |
| Answer» D. Walnut or rose or pea | |
| 11. |
If you cross two walnuts, which of the following is impossible? |
| A. | Progeny to be a walnut |
| B. | Progeny to be a single |
| C. | Progeny to be a homozygous Rose |
| D. | Progeny to have a phenotype other than rose, single, pea or walnut |
| Answer» E. | |
| 12. |
You cross a true breeding pea comb chicken with a single comb chicken. What will you observe in the F2 generation? |
| A. | Ratio 1:2:1 |
| B. | Ratio 3:1 |
| C. | Ratio 9:3:3:1 |
| D. | All pea combed |
| Answer» E. | |
| 13. |
In case of comb shape of a chicken, which of the following when inbred will breed true? |
| A. | Rose |
| B. | Pea |
| C. | Walnut |
| D. | Single |
| Answer» E. | |
| 14. |
Gene interaction always modifies the normal Mendalian ratio. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
The difference in epistasis and gene interaction is ___________________ |
| A. | Gene interaction involves two genes |
| B. | Epistasis modifies the normal Mendelian ratio |
| C. | Epistasis involves two genes |
| D. | Gene interaction produces a novel phenotype |
| Answer» E. | |