Welcome to your Lesson 3 Chromosomal and genetic syndromes exam
1. What are the different types of chromosomal aberrations?
2. Describe the mechanism of Robertsonian translocation.
3. What is the significance of polyploidy?
4. What is the difference between mosaicism and Mosaic Down
syndrome?
5. How microdeletion is related to immunodeficiency?
6. Exchange of non-homologous segments between chromosome is
termed as
7. Which of the following structural chromosomal aberrations
produces pseudo-dominance?
8. Crossover suppressors are because of
9. Total number of barr bodies in an individual with Turner’s syndrome
10. During cell division spindle fibres attach to which of the following?
11. A human being with 47 chromosomes in his somatic cells can be
called
12. Disomic individual’s chromosomal complement could be
13. Which of the following can give rise to new genes?
14. Which of the following is expected to show the least variation among
its members?
15. Most common type of translocation in cattle is
16. In swamp buffalo there is a fusion of chromosome
17. Down Syndrome is Trisomy
18. The phenomenon representing higher multiplies of haploid
chromosome number in organism are called
19. Polyploidy occurs in animals, but more rarely than in
20. The main mechanism producing duplication of chromosome
segments?
31. Notchwing mutation in Drosophila is due to chromosomal deletion
32. Duplication is the source of all new genes.
33. Duplication may also cause translocation.
34. Most common type of translocation is reciprocal type
35. Ring chromosome changes the chromosome morphology.
36. In isochromosome both arms are identical.
37. Robertsonian translocation results in a reduction of the chromosome
number
38. Polytene chromosome is an example of tissue specific polyploidy.
39. Chromosome disorders can be detected by microarray (CGH).
40. Mosaicism is also a type of chromosome disorder
