NEET BIOLOGY

Detailed explanation-1: -G1 is the stage where the cell is preparing to divide. To do this, it then moves into the S phase where the cell copies all the DNA. So, S stands for DNA synthesis.

Detailed explanation-2: -S phase is the period during which DNA replication occurs.

Detailed explanation-3: -The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.

Detailed explanation-4: -S Phase (Synthesis of DNA) Throughout interphase, nuclear DNA remains in a semi-condensed chromatin configuration. In the S phase, DNA replication results in the formation of identical pairs of DNA molecules, sister chromatids, that are firmly attached to the centromeric region.

Detailed explanation-5: -S Phase is a part of interphase of the cell cycle. It is a crucial step of cell division. During this step, the cell replicates its DNA so that it has two complete copies of its genome. Loose DNA known as chromatin gathers and condenses into chromatids with the help of histone proteins.