AP BIOLOGY

Detailed explanation-1: -S phase is the period during which DNA replication occurs.

Detailed explanation-2: -Meiosis is the form of eukaryotic cell division that produces haploid sex cells or gametes (which contain a single copy of each chromosome) from diploid cells (which contain two copies of each chromosome). DNA replication takes place in S-phase of the Interphase before Meiosis I begins.

Detailed explanation-3: -2)Out of all phases the DNA replication occurs only in the S phase of meiosis. The entire meiosis cell cycle has only one S phase that means the DNA will get replicated only once in the entire meiotic division. 3)The meiosis cell cycle except the M phase is also known as the interphase.

Detailed explanation-4: -The interphase of a normal cell cycle will thus, consist of the G1 (Gap 1) phase, S (Synthesis) phase, and G2 (Gap 2) phase. The S phase is the phase in which replication of DNA will take place which is then followed by histones synthesis. This is the phase taking place between the G1 phase and G2 phase.

Detailed explanation-5: -In the eukaryotic cell cycle, chromosome duplication occurs during “S phase” (the phase of DNA synthesis) and chromosome segregation occurs during “M phase” (the mitosis phase).