1. | Metaphase-spindle fibers attached to kinetochores, centromeres split and chromatids separate |
2. | Metaphase- chromosomes moved to spindle equator, chromosomes made up of two sister chromatids |
3. | Anaphase - centromeres split and chromatids separate and start moving away |
4. | Late prophase - chromosomes move to spindle equator |
1. | kinetochore |
2. | both centromere and kinetochore |
3. | centromere, kinetochore and areas adjoining centromere |
4. | centromere |
At metaphase, chromosomes are attached to the spindle fibres by their:
1. Centromere
2. Satellites
3. Secondary constrictions
4. Kinetochores
Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.
1. Metaphase-II
2. Anaphase-I
3. Anaphase-II
4. Metaphase-I
Synapsis occurs between:
1. | a male and a female gamete |
2. | mRNA and ribosomes |
3. | spindle fibres and centromere |
4. | two homologous chromosomes |
Given below is a schematic break-up of the phases/stages of cell cycle-
Which one of the following is the correct indication of the stage/phase in the cell cycle?
1. | B-Metaphase | 2. | C-Karyokinesis |
3. | D-Synthetic phase | 4. | A-Cytokinesis |
Which stages of cell division do the following figures A and B represent respectively?
1. | Metaphase- Telophase | 2. | Telophase- Metaphase |
3. | Late anaphase- Prophase | 4. | Prophase- Anaphase |
During mitosis ER and nucleolus begin to disappear at:
1. late prophase
2. early metaphase
3. late metaphase
4. early prophase
1. | Chromatids start moving towards opposite poles in telophase. |
2. | Golgi complex and endoplasmic reticulum are still visible at the end of prophase. |
3. | Chromosomes move to the spindle equator and get aligned along the equatorial plate in metaphase. |
4. | Chromatids separate but remain in the center of the cell in anaphase. |