MCQOPTIONS
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MCQOPTIONS
This section includes 60 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of following chromosomes is present in a person with Klinefelter's syndrome? |
| A. | XYY |
| B. | XXY |
| C. | YYY |
| D. | XXX |
| Answer» C. YYY | |
| 52. |
Which of following denotes number of chromosomes in a trisomic zygote? |
| A. | 2n-2 |
| B. | 2n-1 |
| C. | 2n+1 |
| D. | 2n+2 |
| Answer» C. 2n+1 | |
| 53. |
When chromosomes are not distributed properly during meiosis, it leads to |
| A. | unequal chromosomes |
| B. | non disjunction |
| C. | Mis disjunction |
| D. | un disjunction |
| Answer» C. Mis disjunction | |
| 54. |
How many children are affected with Down's syndrome in USA every year? |
| A. | 1 in 10,000 |
| B. | 1 in 500 |
| C. | 1 in 10 |
| D. | 1 in 800 |
| Answer» E. | |
| 55. |
Despite having different structures, X and Y chromosomes behave like |
| A. | paralogs |
| B. | Heterologs |
| C. | homologs |
| D. | Orthologs |
| Answer» D. Orthologs | |
| 56. |
Which of following scientist discovered chromosome theory of inheritance? |
| A. | Walter s. Sutton |
| B. | Watson |
| C. | crick |
| D. | Mendel |
| Answer» B. Watson | |
| 57. |
Which of following is hexaploid? |
| A. | strawberries |
| B. | wheat |
| C. | pea |
| D. | banana |
| Answer» C. pea | |
| 58. |
Methylation has what effect on Igf2 gene? |
| A. | deletion |
| B. | activation |
| C. | silencing |
| D. | upregulation |
| Answer» C. silencing | |
| 59. |
Which of following denotes a methyl group? |
| A. | CH₂ |
| B. | CH₃ |
| C. | CH₄ |
| D. | CH₇ |
| Answer» C. CH₄ | |
| 60. |
When zygote doesn't have normal number of chromosomes, it's said to have |
| A. | aneuploidy |
| B. | Proploidy |
| C. | Multiploidy |
| D. | Anaploidy |
| Answer» B. Proploidy | |