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Why would it be important for DNA to organize itself into chromatin and chromosomes?
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How chromatin reticulum become chromosome?
the chromatin coils in the shape of a chromosome when the cell divides
Where do you find chromosomes?
The chromatin is located in the nucleus of a cell. It contains the genetic material, like Deoxyribonucleic Acid (also known as D.N.A.) Chromatin are tiny little fibers compressed together in the nucleus. It can be likened to a spider's web. To be more exact, the chromatin is in between the nuclear membrane and the nucleosus.
What mitotic phrase does chromosomes duplicate itself to produce the chomatids?
The chromosomes duplicate itself during interphase
How does DNA differ when the cell is dividing and when it is between cell divisions?
Between cell divisions, chromosomes loosen and DNA uncoils. DNA serves as a template for the formation of proteins and replicates itself to provide genetic material for the new cells formed by the next division. DNA is not clearly visible when the cell is between divisions.
What is the role of the equator in mitosis?
to attach itself to d chromosomes
How chromatin reticulum become chromosome?
the chromatin coils in the shape of a chromosome when the cell divides
Where is the chromatin in a cell?
Chromatin is always present in a cell. The term "chromatin" refers to the "relaxed" form of chromosomes when the cell is not dividing.In a nutshell:Just prior to mitosis,(the S-phase of the cell cycle), the cell makes a copy of each chromosome which is joined to the original. It is in the first step of mitosis- "Prophase" that the chromatin condenses by coiling up even tighter, and getting fatter- forming the familiar "X" we see in drawings and in our textbooks.As mitosis progresses, the fat X-shaped chromosome is pulled apart, each half going to a different side of the cell. The cell now constricts down the center, and splits in half (M stage) , forming two cells. Each cell should have the same number of chromosomes that the original "parent cell" had. The chromosomes relax again, the cell grows (G1), duplicates the chromosomes (S), prepares for mitosis (G2), then divides (M). Ad infinitum.
Where do you find chromosomes?
The chromatin is located in the nucleus of a cell. It contains the genetic material, like Deoxyribonucleic Acid (also known as D.N.A.) Chromatin are tiny little fibers compressed together in the nucleus. It can be likened to a spider's web. To be more exact, the chromatin is in between the nuclear membrane and the nucleosus.
What does DNA coil up into when it is ready to divide?
In the nondividing cell, DNA tends to be a loose collection of chromatin. In the run-up to cell division, the DNA will coil itself up into distinct chromosomes.
What mitotic phrase does chromosomes duplicate itself to produce the chomatids?
The chromosomes duplicate itself during interphase
What does prophase do in the cell cycle?
During prophase, the chromatin fibers in the nucleus coil tightly and condense into observable chromosomes. The mitotic spindle then begins to form and the centrosomes move away from each other.
Why are the chromosomes not condensed during all stages of mitosis?
When replicating or during transcription, DNA needs to uncoil in order to give the proper code. When the chromosomes are condensed, it cannot uncoil itself to give any sort of message. In order for the cell to remain functional, it must be able to code DNA.
At the start of cell division what duplicates itself?
The chromosomes.
How does DNA differ when the cell is dividing and when it is between cell divisions?
Between cell divisions, chromosomes loosen and DNA uncoils. DNA serves as a template for the formation of proteins and replicates itself to provide genetic material for the new cells formed by the next division. DNA is not clearly visible when the cell is between divisions.
What is the role of the equator in mitosis?
to attach itself to d chromosomes
The stage if the cell cycle where the cell grows replicated DNA and prepares for division is called?
The only way i can explain this is this way; Interphase this is the period between cell divisions ,the genetic material is in the form of CHROMATIN,this is spread throughout the nucleus of fine threads. Before the division begins,the DNA in the chromatin copies of itself,copy attached to the original. When DNA replictes, mitosis begins. Prophase. Chromatin is now visable as CHROMOSOMES,each chromosome has two identical parts as the DNA has duplicated and both parts still together. Membrane around the Nucleus disappears in the cytoplasm. METAPHASE Chromosomes attach to fibres at their midpoints. ANAPHASE The two identical halves of chromosomes split apart during anaphase,they are pulled to oppersite end of the cell. The number of chromosomes is the same at each end,the number that a complete cell is sapposed to have. TELOPHASE Chromosomes unwind and become chromatin again,new nuclear membranes are formed. Cytoplasm divides in the middle of the cell and have become two complete cells(daughter cells),each with the same number of chromosomes as the parent cell. hope this helps someone at least. jen
When can you see chromosomes most distinctly in a cell?
When the cell is dividing itself.
