In which stage of meiosis does the splitting of the centromere occur?

What is the process of shifting of chiasmata towards the ends of the bivalents called?

The pachytene stage of meiosis occurs in which of the following?

The diagram shows a bivalent at prophase-$I$ of meiosis. Which of the four chromatids can cross over?

Gamete mother cells with the chromosome constitution $44+XY$ suffer from non-disjunction at the first meiotic division. Which of the following sets of gametes would result?

Which of the following statement$(s)$ is/are not correct about meiosis?
$I.$ Meiosis involves pairing of homologous chromosomes and recombination between them.
$II.$ Two diploid cells are formed at the end of meiosis-$II$.
$III.$ Meiosis involves two sequential cycles of nuclear and cell division called meiosis-$I$ and meiosis-$II$,but only a single cycle of $DNA$ replication.
$IV.$ Meiosis-$I$ is initiated after the parental chromosome replication which produces identical sister chromatids at the $S$-phase.
The correct option is