Question

Which of the following lists the cell cycle phases in correct sequential order remember description of a cell cycle can start any stage

Answer 1

The cell cycle phases, in correct sequential order, include G1, S, G2, and M phases, followed by cytokinesis. The stages of mitosis within the M phase are prophase, prometaphase, metaphase, anaphase, and telophase.

Step-by-step explanation:

The correct sequential order of the cell cycle phases is as follows:

1. G1 phase (Gap 1): During this phase, the cell grows and carries out its normal functions.
2. S phase (Synthesis): DNA replication takes place and each chromosome is duplicated.
3. G2 phase (Gap 2): The cell continues to grow and prepares for cell division.
4. M phase (Mitotic phase): This phase consists of mitosis and cytokinesis, which are further divided into specific stages.

In mitosis, the stages are as follows:

1. Prophase: Chromosomes condense, the nuclear membrane breaks down, and the spindle fibers start to form.
2. Prometaphase: The spindle fibers attach to the chromosomes, which are now visible as distinct structures.
3. Metaphase: The duplicated chromosomes line up along the equator of the cell.
4. Anaphase: The sister chromatids separate and move to opposite poles of the cell.
5. Telophase: Chromosomes reach the poles, the nuclear membrane reforms, and the spindle fibers disassemble.

Cytokinesis follows mitosis, during which the cytoplasm of the cell divides to form two daughter cells.

Answer 2

The correct ordered sequence of phases of cell cycle is- size increasing phase, DNA copying, preparation of division and division.

Step-by-step explanation:

In the process of cell division the cell undergoes four stages of events. These stages are sequenced like- Gap 1 stage or size increasing stage; synthesis or DNA copying stage; gap 2 or preparation of division stage and mitosis or cell division stage. The first three stages are called interphase altogether. In this phase the cell grows normally and prepares itself to divide.

In the G1 phase the cell accumulates DNA building blocks, in the synthesis stage it copies the DNA and in the G2 phase it populates energy and synthesizes protein. In the phase of mitosis the cell divides through multi phases.