The other major change in nuclear structure during mitosis is chromosome condensation. … This condensation is needed to allow the chromosomes to move along the mitotic spindle without becoming tangled or broken during their distribution to daughter cells.
Why condensation of chromosome is important?
Chromosome condensation is mediated by the condensin complex, among other proteins, and is necessary to prevent chromosomes from being entangled during chromosome segregation.
Is there a need for the chromosomes to be condensed during mitosis?
Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5). … However, when eukaryotic cells are not dividing — a stage called interphase — the chromatin within their chromosomes is less tightly packed.
Why is it important for the chromatin to condense before mitosis?
Chromosome condensation is one of the major chromatin-remodeling events that occur during cell division. The changes in chromatin compaction and higher-order structure organization are essential requisites for ensuring a faithful transmission of the replicated genome to daughter cells.
Why is it important for DNA to condense and form chromosomes before it undergoes division during mitosis?
Why is it important for DNA to condense and form chromosomes before it undergoes division during mitosis? DNA wraps around proteins that help organize and condense. The duplicated chromosomes must condense to be divided between two nuclei during mitosis. … Instead a cell plate forms between the two nuclei.
Why do chromosomes get condensed during cell division?
During cell division, chromatin alternates between a condensed state to facilitate chromosome segregation and a decondensed form when DNA replicates.
Where does condensation of chromosomes take place?
Chromosome condensation, the landmark event at the onset of prophase, often begins in isolated patches of chromatin at the nuclear periphery. Later, chromosome condense into two threads termed sister chromatids that are closely paired along their entire lengths.
What is required for the chromosomes to condense?
Chromatin, a substance that contains genetic material such as DNA, is normally found in a loose bundle inside a cell’s nucleus. During the prophase of mitosis, the chromatin in a cell compacts to form condensed chromosomes; this condensation is required in order for the cell to divide properly.
Why do chromosomes become visible during mitosis?
At the beginning of the first mitotic stage, prophase, the thread-like doubled chromosomes contract and become visible. The two centrioles move to opposite sides of the nucleus. … During metaphase, the nuclear membrane disappears and the chromosomes become aligned half way between the centrioles.
Why does DNA need to coil and condense into chromosomes?
Chromatin, in turn, loops and folds with the help of additional proteins to form chromosomes. Condensing DNA into chromosomes prevents DNA tangling and damage during cell division.
Why is it important for a cell to grow before it replicates its DNA?
Explanation: DNA replication needs to occur because existing cells divide to produce new cells. … So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
In which process does DNA condense into chromosomes quizlet?
A cell needs to replicate all its DNA(in S phase of Interphase), Condense its chromatin into chromosomes( Prophase), Which eventually split in (Anaphase) and the cell is pulled apart (Cytokinesis).