MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following can result from non-disjunction? |
| A. | XY and XO |
| B. | YY and XY |
| C. | X and Y |
| D. | XY and XXY |
| Answer» B. YY and XY | |
| 2. |
If a gamete has 16 chromosomes, what will be the number of chromatids before anaphase 1? |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| Answer» E. | |
| 3. |
If the genes are located in a chromosome as A—B—C—D—E—O—-T. Which of the gene pairs will have least probability of being inherited together? |
| A. | C and D |
| B. | A and T |
| C. | A and B |
| D. | O and T |
| Answer» C. A and B | |
| 4. |
Which of the following doesn’t agree with the chromosomal theory of inheritance? |
| A. | The genes are located on the chromosome |
| B. | The genes on the same chromosome are always passed together |
| C. | The genes are located linearly on the chromosomes |
| D. | The distance between two genes can be mapped |
| Answer» C. The genes are located linearly on the chromosomes | |
| 5. |
IF_A_GAMETE_HAS_16_CHROMOSOMES,_WHAT_WILL_BE_THE_NUMBER_OF_CHROMATIDS_BEFORE_ANAPHASE_1??$ |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| Answer» E. | |
| 6. |
Which_of_the_following_can_result_from_non-disjunction?$ |
| A. | XY and XO |
| B. | YY and XY |
| C. | X and Y |
| D. | XY and XXY |
| Answer» B. YY and XY | |
| 7. |
If the genes are located in a chromosome as A—B—C—D—E—O—-T. Which of the gene pairs will have least probability of being inherited together?# |
| A. | C and D |
| B. | A and T |
| C. | A and B |
| D. | O and T |
| Answer» C. A and B | |
| 8. |
If you cross a red eyed pure breeding female Drosophila with a white eyed male, then the F1 males so produces were crossed with white eyed male, what will be the eye colour of their daughters and sons in F2? |
| A. | Both daughters and sons red eyed |
| B. | Daughters with both eye colour while sons with white eye |
| C. | Both daughters and sons with both eye colours |
| D. | Daughters with red eye and sons with white eyes |
| Answer» E. | |
| 9. |
You observe a genetic trait which is a common occurrence in the male of a particular pedigree, this is possibly a ______________ |
| A. | X linked |
| B. | Y linked |
| C. | X linked recessive |
| D. | Y linked dominant |
| Answer» C. X linked recessive | |
| 10. |
The chromosomal theory of inheritance violates which of the following laws? |
| A. | Law of dominance |
| B. | Law of segregation |
| C. | Law of independent assortment |
| D. | None |
| Answer» E. | |
| 11. |
If there is a non-disjunction in the X chromosome, the progeny being XXY, what will be the constitution of the chromosome(s) in the gamete? |
| A. | X and Y |
| B. | X and XY |
| C. | XX and Y |
| D. | XXY with no separation |
| Answer» C. XX and Y | |
| 12. |
If you cross a white eyed female drosophila with a red eyed male drosophila, what will be the colour of eyes for their male and female offspring? |
| A. | Both red eyed |
| B. | Both white eyed |
| C. | Red eyed daughter and white eyed son |
| D. | Red eyed son and white eyed daughter |
| Answer» D. Red eyed son and white eyed daughter | |
| 13. |
Which of the following doesn’t agree with the chromosomal theory of inheritance?$ |
| A. | The genes are located on the chromosome |
| B. | The genes on the same chromosome are always passed together |
| C. | The genes are located linearly on the chromosomes |
| D. | The distance between two genes can be mapped |
| Answer» C. The genes are located linearly on the chromosomes | |
| 14. |
The chromosomal theory of inheritance was proposed by ____________ |
| A. | Mendel |
| B. | Watson and Crick |
| C. | Darwin |
| D. | Sutton and Boveri |
| Answer» E. | |