The complex formed by a pair of synapsed homologous chromosomes is called
1. equatorial plate
2. Kinetochore
3. bivalent
4. axoneme
A stage in cell division is shown in the figure. Select the answer which gives correct
identification of the stage with its characteristics.
1. Telophase - Nuclear envelope reforms, Golgi complex reforms
2. Late anaphase - Chromosomes move away from equatorial plate, Golgi complex not
present
3. Cytokinesis - Cell plate formed, mitochondria distributed between two daughter cells
4. Telophase - Endoplasmic reticulum and nucleolus not reformed yet
During gamete formation, the enzyme recombinase participates during
1. Metaphase-I
2. Anaphase-II
3. Prophase-I
4. Prophase-II
Select the correct option with respect to mitosis.
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 equatorial plate in metaphase
4. Chromatids separate but remains in the centre of the cell in anaphase
Given below is a schematic break-up of the phases/stages of the 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-Synthesis phase
4. A-Cytokinesis
Astral rays arise from
1. centriole
2. cytoplasm
3. chromatid
4. centromere.
When synapsis is complete all along the chromosome, the cell is said to have entered a stage called
(1) Zygotene
(2) pachytene
(3) diplotene
(4) diakinesis.
Which of the following is not a characteristic of meiosis?
(1) It involves two stages of DNA replication one before meiosis-I and another before meiosis-II
(2) It involves recombination and crossing over
(3) Sister chromatids separate during anaphase- II
(4) Nuclear membrane disappears during prophase.
Which is the longest phase of the cell cycle?
(1) M-phase
(2) Interphase
(3) Leptotene
(4) S-phase
Identify the correct matched pair.
(1) Segregation-Metaphase ll
(2) Significance of meiosis-production of genetically similar cells
(3) Exchange of genetic material- DIakinesis
(4) Anaphase ll of meiosis-Centromeric division