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What happens to the structures in the nucleus in each stage prophase plus?
Wiki User
∙ 13y ago
In Mitosis, there are four stages involved in the separation of chromosomes. It produces two identical sets of chromosomes in two nuclei.
1. Prophase: The double-stranded chromosomes condense, and the nuclear membrane around them degenerates.
2. Metaphase: The chromosomes line up in the middle (equator) of the cell. The centrioles, which produce spindle microtubules, divide and move to either end of the cell. The spindle fibres form.
3. Anaphase: Sister chromatids* are pulled apart by the spindle fibres.
4. Telophase: The chromosomes are at either end of the cell, and new nuclear membranes start to form around them.
*one of two identical copies/strands of DNA which make up a chromosome. They are generally 'X' shaped and joined at a point called the centromere.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agohappens to the structures in the nucleus in each stage prophase?
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What cellular structures move to opposite ends of the cell during prophase?
It's the CENTRIOLES and their star-like radiating structures, called asters.This is Stage 1 in Mitosis:Chromatin in the nucleus condenses to form chromosomes. The pairs of centrioles move to the opposite sides of the nucleus. Spindle fibers form a bridge between the ends of the cell. The nuclear envelope breaks down.
In what phase does chromosomes condense and become visible?
The chromosomes in a cell's nucleus are only visible during the part of the cell cycle known as prophase. Prophase is the stage of mitosis in which chromatin condensation occurs.
What stage does chromatin condense to chromosomes?
During mitosis, chromosomes are in their most condensed form during metaphase
What stage occurs when crossing over occurs in meiosis?
Prophase I of Meiosis.
Prophase occurs during which stage of the cell cycle?
It occurs in the first stage.
During which stage of mitosis does the nucleus break down?
telophase (4th)
When do chromosomes become visible in the nucleus of a cell?
During prophase, the first stage of mitosis, the chromosomes become visible as distinct structures. The nuclear envelope also now breaks down, and a spindle forms.
What cellular structures move to opposite ends of the cell during prophase?
It's the CENTRIOLES and their star-like radiating structures, called asters.This is Stage 1 in Mitosis:Chromatin in the nucleus condenses to form chromosomes. The pairs of centrioles move to the opposite sides of the nucleus. Spindle fibers form a bridge between the ends of the cell. The nuclear envelope breaks down.
In what phase does chromosomes condense and become visible?
The chromosomes in a cell's nucleus are only visible during the part of the cell cycle known as prophase. Prophase is the stage of mitosis in which chromatin condensation occurs.
What stage does chromatin condense to chromosomes?
During mitosis, chromosomes are in their most condensed form during metaphase
During what cell cycle phase is the spindle formed?
The spindle forms during prophase of mitosis or meiosis. The spindle is made up of protein fibers, which are microtubules of the cytoskeleton.
What happens during prophase in the cell division?
Cell division includes a stage known as mitosis (meiosis in gametic cells), which has four phases: prophase, metaphase, anaphase and telophase. Each stage can be differentiated under a microscope by the physical changes visible in the cells nucleus; particularly the chromosomal alignment. In prophase chromatids condense to form chromosomes, the mitotic spindle forms and the nucleur membrane breaks down.
The nucleus and nucleolus disappear during what?
Prophase- first and longest stage of mitosis in prophase, the chromosomes condense, the nucleus and nucleolus disappear. The centrioles move toward opposite sides of animal cells. and the spindle begins to form and attach to the chromosomes.
What stage occurs when crossing over occurs in meiosis?
Prophase I of Meiosis.
Prophase occurs during which stage of the cell cycle?
It occurs in the first stage.
During which phase does the chromatin condense into chromosomes?
The chromosomes coil up and condense during prophase
What is the stage of mitosis where the nuclear membrane has completely disappeared?
in early stage of mitosis
