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.
| 1. |
Relative location of genes along a chromosome is shown by |
| A. | chromosomal map |
| B. | genetic map |
| C. | linkage map |
| D. | pedigree |
| Answer» D. pedigree | |
| 2. |
Duchenne muscular dystrophy affects one in how many people in United States? |
| A. | 1000 |
| B. | 3500 |
| C. | 10000 |
| D. | 5000 |
| Answer» C. 10000 | |
| 3. |
In which year process of Mitosis was discovered? |
| A. | 1821 |
| B. | 1827 |
| C. | 1862 |
| D. | 1875 |
| Answer» E. | |
| 4. |
Which of following cancers occurs due to Philadelphia chromosome? |
| A. | chronic myeloid d leukemia |
| B. | brain cancer |
| C. | breast cancer |
| D. | liver cancer |
| Answer» B. brain cancer | |
| 5. |
Which of following changes usually silences a gene? |
| A. | methylation |
| B. | phosphorylation |
| C. | dimerization |
| D. | inversion |
| Answer» B. phosphorylation | |
| 6. |
Which of following disease is caused by absence of one or more clotting factors of blood? |
| A. | hemophilia |
| B. | anemia |
| C. | Tay Sach's |
| D. | parkinson's disease |
| Answer» B. anemia | |
| 7. |
If orientation of chromosome is reversed its called |
| A. | duplication |
| B. | deletion |
| C. | inversion |
| D. | rotation |
| Answer» D. rotation | |
| 8. |
Which of following can only be passed on offspring from their mothers? |
| A. | cell membrane |
| B. | mitochondria |
| C. | nucleus |
| D. | ribosomes |
| Answer» C. nucleus | |
| 9. |
Which of following tests can be used to check if two genes are linked or not? |
| A. | chi square |
| B. | Punnett's square |
| C. | pedigree analysis |
| D. | t test |
| Answer» B. Punnett's square | |
| 10. |
What is ordered list of location of genes along a chromosome called? |
| A. | genetic map |
| B. | chromosomal map |
| C. | pedigree |
| D. | linkage map |
| Answer» B. chromosomal map | |
| 11. |
Variation in phenotype depending upon which parent gene is inherited from is called |
| A. | aneuploidy |
| B. | translocation |
| C. | genomic imprinting |
| D. | Polyploid |
| Answer» D. Polyploid | |
| 12. |
Number of copies of a gene that are being actively expressed is called |
| A. | gene dosage |
| B. | gene number |
| C. | gene unit |
| D. | gene replications |
| Answer» B. gene number | |
| 13. |
Which of following disease have a low risk of occurring in Down?s syndrome patients? |
| A. | malaria |
| B. | leukemia |
| C. | stroke |
| D. | alzheimer's disease |
| Answer» D. alzheimer's disease | |
| 14. |
Which of following scientists studies X chromosome inactivation? |
| A. | Watson |
| B. | Walter s. Sutton |
| C. | Mendel |
| D. | Mary Lyon |
| Answer» E. | |
| 15. |
Which of following is a result of crossing over? |
| A. | silencing of genes |
| B. | deletion of genes |
| C. | recombination of genes |
| D. | addition of genes |
| Answer» D. addition of genes | |
| 16. |
Which of following shows distance between genes? |
| A. | gene unit |
| B. | map unit |
| C. | pedigree unit |
| D. | linkage unit |
| Answer» C. pedigree unit | |
| 17. |
Human X chromosome consists of approximately how many genes? |
| A. | 500 |
| B. | 1000 |
| C. | 1100 |
| D. | 300 |
| Answer» D. 300 | |
| 18. |
Which of following chromosomes are inherited by females? |
| A. | XX |
| B. | XY |
| C. | YY |
| D. | YX |
| Answer» B. XY | |
| 19. |
In which year process of Meiosis was discovered? |
| A. | 1920 |
| B. | 2000 |
| C. | 1921 |
| D. | 1890 |
| Answer» E. | |
| 20. |
On which of following chromosomes, sex-linked gene is present? |
| A. | x |
| B. | 1 |
| C. | 9 |
| D. | 10 |
| Answer» B. 1 | |
| 21. |
What is standard cut off point for Chi-square test that is used by scientists? |
| A. | 1 |
| B. | 2 |
| C. | 0.5 |
| D. | 0.75 |
| Answer» D. 0.75 | |
| 22. |
Genes that are inherited together are called |
| A. | linked genes |
| B. | close genes |
| C. | associated genes |
| D. | connected genes |
| Answer» B. close genes | |
| 23. |
Which of following disease is a result of a specific deletion in chromosome 5? |
| A. | Klinefelter |
| B. | cri du chat |
| C. | Kupffer's disease |
| D. | leukemia |
| Answer» C. Kupffer's disease | |
| 24. |
Which of following disease have a high risk of occurring in Down's syndrome patients? |
| A. | leukemia |
| B. | stroke |
| C. | malaria |
| D. | polio |
| Answer» B. stroke | |
| 25. |
Which of following diseases cannot be inherited by females? |
| A. | x linked |
| B. | y linked |
| C. | silent mutations |
| D. | Tay Sach's |
| Answer» C. silent mutations | |
| 26. |
In which of following, Polyploidy is common? |
| A. | humans |
| B. | plants |
| C. | fungi |
| D. | animals |
| Answer» C. fungi | |
| 27. |
How many males are typically born with XYY chromosomes? |
| A. | 1 in 10,000 |
| B. | 1 in 500 |
| C. | 1 in 10 |
| D. | 1 in 1000 |
| Answer» E. | |
| 28. |
Which of following characteristics is present in females born with XXX? |
| A. | slightly taller than usual |
| B. | slightly darker |
| C. | obese |
| D. | short |
| Answer» B. slightly darker | |
| 29. |
Inactive X chromosome in female cell forms a |
| A. | barr fiber |
| B. | condensed body |
| C. | chromatin |
| D. | barr body |
| Answer» E. | |
| 30. |
Which of following terms denotes triploidy? |
| A. | 3n |
| B. | 4n+1 |
| C. | 4n |
| D. | 2n+2 |
| Answer» B. 4n+1 | |
| 31. |
Which of following terms denotes tetraploidy? |
| A. | 4n |
| B. | 4n+1 |
| C. | 2n+2 |
| D. | 3n-1 |
| Answer» B. 4n+1 | |
| 32. |
Offspring that have new combinations of traits than their parents are called |
| A. | F1 type |
| B. | F2 type |
| C. | parental type |
| D. | recombinant type |
| Answer» E. | |
| 33. |
When a chromosome fragment is lost its called |
| A. | deletion |
| B. | inversion |
| C. | duplication |
| D. | removal |
| Answer» B. inversion | |
| 34. |
Which of following denotes number of chromosomes in a monosomic zygote? |
| A. | 2n-1 |
| B. | 2n+1 |
| C. | 2n-2 |
| D. | 2n+2 |
| Answer» B. 2n+1 | |
| 35. |
How does a mitochondrial disease mostly affect which of following? |
| A. | immune system |
| B. | respiratory organs |
| C. | heart |
| D. | nervous system |
| Answer» E. | |
| 36. |
How many imprinted genes have been identified so far? |
| A. | 10 |
| B. | 20 |
| C. | 40 |
| D. | 60 |
| Answer» E. | |
| 37. |
Which of following is not an X linked disease? |
| A. | Duchenne muscular dystrophy |
| B. | hemophilia |
| C. | daltonism |
| D. | Tay Sach's |
| Answer» E. | |
| 38. |
Which of following is an example of mitochondrial disease? |
| A. | respiratory failure |
| B. | alzheimer's disease |
| C. | Leber's hereditary optic neuropathy |
| D. | measles |
| Answer» D. measles | |
| 39. |
In Down's syndrome, cells are trisomic for which of following chromosomes? |
| A. | 21 |
| B. | 20 |
| C. | 14 |
| D. | 13 |
| Answer» B. 20 | |
| 40. |
Which of following did Morgan perform his experiments on? |
| A. | chimpanzees |
| B. | drosophila |
| C. | monkeys |
| D. | mice |
| Answer» C. monkeys | |
| 41. |
Work of which of following scientist was first hint towards mateRNAl inheritance of mitochondria? |
| A. | Watson |
| B. | carl Correns |
| C. | crick |
| D. | Mendel |
| Answer» C. crick | |
| 42. |
If a deleted segment of a chromosome gets attached to another chromatid it results in |
| A. | inversion |
| B. | duplication |
| C. | deletion |
| D. | addition |
| Answer» C. deletion | |
| 43. |
How many mutations have been found so far that cause Leber?s hereditary optic neuropathy? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 44. |
When an organism has more than one sets of chromosomes in somatic cells, it's known as |
| A. | Proploidy |
| B. | Multiploidy |
| C. | polyploidy |
| D. | Monoploidy |
| Answer» D. Monoploidy | |
| 45. |
If a broken fragment of a chromosome joins to a non-homologous chromosome, it results in |
| A. | duplication |
| B. | inversion |
| C. | rotation |
| D. | translocation |
| Answer» E. | |
| 46. |
Which of following is octoploid? |
| A. | wheat |
| B. | banana |
| C. | strawberries |
| D. | pea |
| Answer» D. pea | |
| 47. |
What is percentage of aneuploidy in human conceptions? |
| A. | 0.05 |
| B. | 0.01 |
| C. | 0.8 |
| D. | 0.25 |
| Answer» E. | |
| 48. |
In which of following Extranuclear genes are present? |
| A. | mitochondria |
| B. | ribosomes |
| C. | endosomes |
| D. | lysosomes |
| Answer» B. ribosomes | |
| 49. |
Which of following is triploid? |
| A. | banana |
| B. | pea |
| C. | strawberries |
| D. | wheat |
| Answer» B. pea | |
| 50. |
Offspring's that match parent traits are called |
| A. | parental types |
| B. | F1 types |
| C. | F2 types |
| D. | parent clones |
| Answer» B. F1 types | |