Chromosomal Aberrations and Consequences Practice Questions
20 free Chromosomal Aberrations and Consequences practice questions for the NCERT Biology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
20 questions
All Chromosomal Aberrations and Consequences questions
- Q1. Chromosomal aberrations are defined as:
- Q2. Which of the following is an example of a structural chromosomal aberration?
- Q3. Loss of a segment of a chromosome results in which type of aberration?
- Q4. Duplication of a chromosomal segment leads to:
- Q5. Inversion is best described as:
- Q6. Which chromosomal aberration involves exchange of segments between non-homologous chromosomes?
- Q7. Numerical chromosomal aberrations mainly arise due to:
- Q8. Aneuploidy refers to:
- Q9. Which condition is an example of aneuploidy in humans?
- Q10. Polyploidy is characterized by:
- Q11. Which chromosomal aberration is often lethal when occurring in autosomes?
- Q12. Balanced translocation usually does not show phenotypic effects because:
- Q13. Which stage of cell division is most critical for preventing numerical chromosomal aberrations?
- Q14. Chromosomal aberrations can be caused by exposure to:
- Q15. Which chromosomal aberration alters gene order but not gene number?
- Q16. The major consequence of chromosomal aberrations at the organism level is:
- Q17. Which chromosomal abnormality is more tolerated in plants than animals?
- Q18. Which technique is commonly used to detect chromosomal aberrations?
- Q19. Structural chromosomal aberrations mainly affect:
- Q20. Overall, chromosomal aberrations highlight the importance of: