Question

Which of the following statement(s) is/are 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.

• A. I and Ill
• B. Only II
• C. II and III
• D. I, II, III and IV

Answer 1

The correct option is A I and Ill

Synapsis (additionally called syndesis) is the matching of two homologous chromosomes that happens amid meiosis. It permits coordinating up of homologous sets preceding their isolation, and a conceivable chromosomal hybrid between them. Synapsis happens amid prophase I of meiosis.

Meiosis includes two consecutive cycles of atomic and cell division called meiosis I and meiosis II yet just a solitary cycle of DNA replication. Meiosis I is started after the parental chromosomes have duplicated to deliver indistinguishable sister chromatids at the S stage.

So, the correct option is 'I and Ill'