Which phases occur within interphase?

Which phases occur within interphase?

• A. G1, S, G2
• B. Prophase
• C. PMAT
• D. Cytokinesis

Answer: (A)

Interphase is the part of the cell cycle when the cell grows and doubles its DNA in preparation for division. It includes G1, S, and G2. In G1 the cell increases in size and carries out normal functions. In S, the DNA is replicated so each chromosome now has two sister chromatids. In G2 the cell finishes growing, makes the proteins needed for mitosis, and checks that DNA replication happened correctly. During interphase, chromatin is less condensed, the nuclear envelope is intact, and the cell is not yet dividing. Prophase is the first stage of mitosis, when chromosomes condense and become visible. PMAT is the sequence of mitotic stages (prophase, metaphase, anaphase, telophase). Cytokinesis is the division of the cytoplasm that usually overlaps with telophase. These events are not part of interphase. So the phases that occur within interphase are G1, S, and G2.

Interphase is the part of the cell cycle when the cell grows and doubles its DNA in preparation for division. It includes G1, S, and G2. In G1 the cell increases in size and carries out normal functions. In S, the DNA is replicated so each chromosome now has two sister chromatids. In G2 the cell finishes growing, makes the proteins needed for mitosis, and checks that DNA replication happened correctly. During interphase, chromatin is less condensed, the nuclear envelope is intact, and the cell is not yet dividing.

Prophase is the first stage of mitosis, when chromosomes condense and become visible. PMAT is the sequence of mitotic stages (prophase, metaphase, anaphase, telophase). Cytokinesis is the division of the cytoplasm that usually overlaps with telophase. These events are not part of interphase. So the phases that occur within interphase are G1, S, and G2.