Question

Terminalisation is related with:
A. Mitosis
B. Meiosis
C. Diakinesis
D. Telophase I

Answer 1

Hint: Terminalisation is the process in which movement of transverse bonds present in between the paired chromosomes, from the point of origin of the chromosome pair to the ends of the chromosome pair.

Complete answer:
Process of cell division in which a diploid cell becomes a haploid cell is called meiosis and this process is involved in sexual reproduction. In this process, four daughter cells are produced in the one cell division and four cells are haploid in nature.
It mainly consists of two stages that is, meiosis I and meiosis II.
Meiosis I, is further divided into:
Prophase I: Replicated chromosomes condense into the structure of chromatids that can be observed under the microscope, each consisting of two sister chromatids. At the end, the nuclear membrane disappears. Mitotic spindle having microtubules and other required proteins comes to cytoplasm.
Metaphase I: Chromosome alignment takes place at centre of the cell. The centrioles come to opposite poles of the cell, extending the mitotic spindle from them and attach to the one chromosome of each pair of the chromosome.
Anaphase I: Pairs of chromosomes are separated by mitotic spindles, taking each chromosome of the pair to opposite poles. In this sister chromatids stay together.
Telophase I and cytokinesis: Chromosomes move completely to two opposite poles of the cell. Each pole is full of chromosomes. Then the cell membrane and nuclear membrane starts forming and cytokinesis takes place.
Prophase II: We have two new daughter cells with 23 pairs of chromosomes. Centrioles replicate and mitotic spindle stars forming again. This stage is completed when separation of homologous chromosomes completely happens and crossing over between these take place. This process is known as diakinesis.
Metaphase II: Sister chromatids are separated by mitotic spindle to two opposite poles and now each chromatid are separate chromosomes.
Telophase II and cytokinesis: Chromosomes are on opposite poles and membranes form around each set of chromosomes to form new nuclei and cells.

So, we can conclude that Terminalisation is related with the Diakinesis process of cell division. And option ‘C’ is correct.

Note: Cell cycle broadly consists of G1 phase, S-phase, G1 phase, and M-phase. Interphase: The genomic DNA present in the parent cell is copied through replication resulting into two identical full sets of the chromosomes. Microtubules extend from the centrosomes. This is the step before meiosis I.