MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following mutations is the most common type of mutation? |
| A. | Somatic mutation |
| B. | Germinal mutation |
| C. | Backward mutation |
| D. | Forward mutation |
| Answer» E. | |
| 2. |
Which of the following chemical mutagen is both mutagenic to replicating and non-replicating DNA? |
| A. | Acridines |
| B. | Nitrous acid |
| C. | Base analogs |
| D. | Mustard gas |
| Answer» C. Base analogs | |
| 3. |
Which of the following statements is incorrect with respect to ionizing radiation? |
| A. | They cause breaks in the chromosomes |
| B. | The cells ionized show abnormal cell division |
| C. | Frequency of induced mutations is directly proportional to the doses of the radiations |
| D. | It does not lead to cancer |
| Answer» E. | |
| 4. |
Who is the father of Actinobiology? |
| A. | H.J Muller |
| B. | C. Auerbach |
| C. | Stevens |
| D. | Marie Fuller |
| Answer» B. C. Auerbach | |
| 5. |
Diploids are better for mutation experimental studies. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of the following statements is incorrect with respect to polyploidy? |
| A. | Often seen in plants |
| B. | Results in sterility in animals |
| C. | A decrease in the number of sets of chromosomes |
| D. | Increase in the number of sets of chromosomes |
| Answer» D. Increase in the number of sets of chromosomes | |
| 7. |
Which of the following is not an example of aneuploidy? |
| A. | Turner’s syndrome |
| B. | Down’s syndrome |
| C. | Phenylketonuria |
| D. | Klinefelter’s syndrome |
| Answer» D. Klinefelter’s syndrome | |
| 8. |
Which of the following represents nullisomic conditions? |
| A. | 2n-1 |
| B. | 2n-2 |
| C. | 2n+1 |
| D. | 2n+2 |
| Answer» C. 2n+1 | |
| 9. |
Which of the following is incorrect with respect to aneuploidy? |
| A. | Arises due to the non-disjunction of homologous pair of chromosomes |
| B. | Arises due to the non-disjunction of non-homologous chromosomes |
| C. | One gamete comes to have an extra chromosome |
| D. | Another gamete becomes deficient in one chromosome |
| Answer» C. One gamete comes to have an extra chromosome | |
| 10. |
Which was the first chemical mutagen? |
| A. | Nitrogen gas |
| B. | Uranium core |
| C. | Technetium |
| D. | Mustard gas |
| Answer» E. | |
| 11. |
Consanguineous mating is the natural mating between two different individuals of the same species which are unrelated. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
What should be the genotype of the indicated member? |
| A. | AA |
| B. | Aa |
| C. | XY |
| D. | aa |
| Answer» E. | |
| 13. |
In the pedigree given below, what does the indicated allele represent? |
| A. | Dominant allele |
| B. | Recessive allele |
| C. | Moderate allele |
| D. | Half allele |
| Answer» B. Recessive allele | |
| 14. |
By which of the following methods, a pattern of inheritance can be traced in a family? |
| A. | Pedigree analysis |
| B. | Chromosomal analysis |
| C. | Nuclear analysis |
| D. | Cytoplasm analysis |
| Answer» B. Chromosomal analysis | |