What happens in mitosis?
Cell divides its nucleus
Cell copies its DNA
Cell divides its cytoplasm
Cell creates two cells with different DNA
In mitosis, a cell undergoes a series of steps to divide its nucleus and create two identical daughter cells. The process consists of the following phases:
1. Interphase: The cell prepares for division by growing, carrying out its normal functions, and replicating its DNA.
2. Prophase: The nuclear membrane starts to break down, and the DNA condenses into distinct chromosomes. The spindle apparatus, composed of microtubules, begins to form.
3. Metaphase: The chromosomes align in the middle of the cell, forming a plane called the metaphase plate. The spindle fibers attach to the centromeres of each chromosome.
4. Anaphase: The spindle fibers shorten and pull the sister chromatids apart. The separated chromatids are then referred to as individual chromosomes and are pulled towards opposite poles of the cell.
5. Telophase: The two sets of chromosomes reach opposite ends of the cell, and new nuclear membranes start to form around them. The chromosomes start to decondense.
6. Cytokinesis: The cytoplasm divides into two daughter cells, each containing an identical set of chromosomes. In animal cells, a cleavage furrow forms and deepens until the cytoplasm divides completely. In plant cells, a cell plate forms to separate the cytoplasm, eventually leading to the formation of a new cell wall.
At the end of mitosis, two daughter cells are produced, each containing the same DNA as the original cell. Therefore, the cells have identical DNA and are genetically identical.
just choose one of the answer choices
In mitosis, the cell divides its nucleus.
What answer best describes the stage in the picture?
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Group of answer choices
Cell divides its nucleus in Metaphase.
Cell dissolves its nuclear membrane in Prophase.
Cell divides its chromosomes in Cytokinesis.
Cell divides its cytoplasm in Cytokinesis.
Unfortunately, as an AI text-based model, I am unable to view or interpret images. Therefore, I cannot accurately determine the stage depicted in the provided image. It would be helpful if you could provide a description or context of the image for me to assist you further.
In mitosis, a cell goes through a process of dividing its nucleus and DNA, ultimately resulting in the formation of two cells with identical DNA. Here is a breakdown of the key events that occur during mitosis:
1. Interphase: This is the stage before mitosis where the cell prepares for division. The DNA of the cell replicates during this phase, forming two identical copies of each chromosome.
2. Prophase: The chromatin condenses, and the replicated chromosomes become visible. The nuclear membrane disintegrates, and a structure called the spindle apparatus starts to form.
3. Metaphase: The spindle apparatus aligns the replicated chromosomes at the center of the cell, forming a plane called the metaphase plate.
4. Anaphase: The replicated chromosomes separate and are pulled to opposite ends of the cell by the spindle fibers.
5. Telophase: The spindle apparatus disassembles, and the nuclear membrane reforms around the separated sets of chromosomes. The chromosomes begin to uncoil, and two distinct nuclei start to form.
6. Cytokinesis: This is the final stage where the cell's cytoplasm divides, resulting in the formation of two daughter cells, each with a complete set of DNA.
So, in summary, mitosis involves the replication and separation of DNA, followed by the division of cytoplasm, resulting in the formation of two cells with the same DNA.