NEET BIOLOGY

Detailed explanation-1: -Interphase can be divided into three stages: The first growth phase (G1): During the G1 stage, the cell doubles in size and doubles the number of organelles. The synthesis phase (S): The DNA is replicated during this phase.

Detailed explanation-2: -Then, at a critical point during interphase (called the S phase), the cell duplicates its chromosomes and ensures its systems are ready for cell division. If all conditions are ideal, the cell is now ready to move into the first phase of mitosis.

Detailed explanation-3: -The cells in the G2 phase have double the DNA content because the replicated DNA is synthesized and the cell contains double the genetic material. This is necessary before the mitotic division starts resulting in the formation of new cells.

Detailed explanation-4: -The stages of interphase are: G1 (Gap 1), in which the cell grows and functions normally. During this time, a high amount of protein synthesis occurs and the cell grows (to about double its original size) – more organelles are produced and the volume of the cytoplasm increases.