The synaptonemal complex is visible under
A. Light microwave
B. Electron microscope
C. Compound microscope
D. 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?
A. Prophase l
B. Zygotene
C. Pachytene
D. Both A and B
The appearance of recombination nodule is a characteristic feature of
A. Pachytene
B. Zygotene
C. Diplotene
D. Diakinesis
Recombination nodules are
A. Sites over sister chromatids
B. Sites over non-sister chromatids
C. Sites over homologous chromosomes
D. Sites over non-homologous chromosomes
Which of the following is an enzyme mediated process?
A. Crossing over
B. Synapsis
C. Leptotene
D. 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
A. The end of pachytene
B. Just before the end of pachytene
C. the end of midphase of pachytene
D. End of zygotene