The stage at which chromosomes start pairing together is
1. Pachytene
2. Zygotene
3. Leptotene
4. Diplotene
The synaptonemal complex is visible under
1. | Light microwave | 2. | Electron microscope |
3. | Compound microscope | 4. | Simple microscope |
The synapsed homologous chromosomes form
1. Tetrad
2. Bivalent
3. Both A and B
4. Diad
Bivalent is clearly visible at which stage?
1. Pachytene
2. Leptotene
3. Zygotene
4. 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
1. Because of synapsis
2. Because of crossing over
3. Because of termination of chiasmata
4. Because of X Shaped structure
Recombination completion leads to
1. | Chromosomes attached to each other at the 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 |