Need to find the sequence of how an animal cell starts. Need the order
To find the sequence of how an animal cell starts, we need to understand the process of cell division, also known as the cell cycle. The cell cycle consists of several phases, each with specific events that occur in a particular order. Here is the order of events for an animal cell starting from the beginning:
1. Interphase: Before the actual cell division process begins, the cell goes through a phase called interphase. Interphase has three main stages:
a. G1 Phase: The first growth stage where the cell increases its size, produces proteins, and carries out its normal functions.
b. S Phase: The synthesis phase during which the DNA in the cell's nucleus is replicated.
c. G2 Phase: The second growth phase where the cell continues to grow and prepares for division.
2. Mitosis: Mitosis is the actual process of cell division and consists of four main stages:
a. Prophase: During prophase, the chromatin (DNA and proteins) condenses into visible chromosomes. The nuclear membrane starts to dissolve, and the centrosomes move to opposite poles of the cell, forming spindle fibers.
b. Metaphase: In metaphase, the chromosomes align at the center of the cell along the metaphase plate. The spindle fibers attach to the centromeres of each chromosome.
c. Anaphase: During anaphase, the spindle fibers contract, separating the sister chromatids of each chromosome and pulling them towards opposite poles of the cell.
d. Telophase: Telophase marks the final stage of mitosis. The chromosomes reach the opposite poles of the cell, and a new nuclear membrane forms around each set of chromosomes, defining the two new nuclei.
3. Cytokinesis: Cytokinesis is the division of the cytoplasm, which completes the process of cell division. In animal cells, a contractile ring forms along the equator of the cell, gradually constricting and separating the cytoplasm into two separate daughter cells.
It is important to note that this sequence represents a generalized process and may have slight variations depending on the specific type of animal cell.