The synaptonemal complex is visible under
1. | Light microwave |
2. | Electron microscope |
3. | Compound microscope |
4. | Simple microscope |
The synapsed homologous chromosomes form
A. Tetrad
B. Bivalent
C. Both A and B
D. Diad
Bivalent is clearly visible at which stage?
A. Pachytene
B. Leptotene
C. Zygotene
D. Diplotene
Which of the following is the shortest phase among the following?
1. | Prophase l | 2. | Zygotene |
3. | Pachytene | 4. | Both A and B |
The appearance of recombination nodule is a characteristic feature of
1. | Pachytene |
2. | Zygotene |
3. | Diplotene |
4. | Diakinesis |
Recombination nodules are
1. | Sites over sister chromatids |
2. | Sites over non-sister chromatids |
3. | Sites over homologous chromosomes |
4. | Sites over non-homologous chromosomes |
Which of the following is an enzyme mediated process?
1. | Crossing over |
2. | Synapsis |
3. | Leptotene |
4. | Both A and B |
Recombination of genetic material occurs
A. Because of synapsis
B. Because of crossing over
C. Because of termination of chiasmata
D. Because of X Shaped structure
Recombination completion leads to
1. | Chromosomes attached to each other at centromere |
2. | Chromosomes attached to each other at sites of crossing over in the sister chromatids |
3. | Chromosomes linked at the sites of crossing over |
4. | Both A and C |
Recombination completes in
1. | The end of pachytene |
2. | Just before the end of pachytene |
3. | the end of midphase of pachytene |
4. | End of zygotene |