Crossing over is the only answer choice that does not occur during mitosis. … This require the formation of tetrads, which does not occur during mitosis. During prophase of mitosis chromatin condenses to form chromosomes and the nucleolus disappears. During prometaphase the nuclear membrane disintegrates.
Does not occur in mitosis?
In meiosis , synapsis ( Pairing of homologous chromosome ) , Crossing over ( exchange of chromosomal segment between nos sister chromatids ) occurs which does not occur in mitosis.
Which of the following does occur during mitosis?
During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. … Then, at a critical point during interphase (called the S phase), the cell duplicates its chromosomes and ensures its systems are ready for cell division.
What is not in mitosis?
What is (and is not) mitosis? Interphase is often included in discussions of mitosis, but interphase is technically not part of mitosis, but rather encompasses stages G1, S, and G2 of the cell cycle. …
Is crossing over occurs in mitosis?
It was a surprise for geneticists to discover that crossing-over can also occur at mitosis. Presumably it must take place when homologous chromosomal segments are accidentally paired in asexual cells such as body cells. … Mitotic crossing-over occurs only in diploid cells such as the body cells of diploid organisms.
What would happen if mitosis did not occur correctly?
If they do not align correctly, they cannot move individually to opposite poles in the later phases of mitosis, and the result will be one cell with extra chromosomes and a daughter cell with missing chromosomes. These mutations can lead to harmful results such as cell death, organic disease or cancer.
Where does mitosis occur in the body?
Cell division by mitosis occurs in all human body cells except the gonads (sex cells). During mitosis, the DNA is exactly copied and a new daughter cell created with the same number of chromosomes as the parent cell, ie 46.
What is the result of mitosis?
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
How does mitosis happen?
Mitosis is the process in cell division by which the nucleus of the cell divides (in a multiple phase), giving rise to two identical daughter cells. Mitosis happens in all eukaryotic cells (plants, animals, and fungi). It is the process of cell renewal and growth in a plant, animal or fungus.
Why cytokinesis is not part of mitosis?
No, cytokinesis is separate from mitosis. It is the splitting of the cytoplasm, which occurs after mitosis. Mitosis can occur without cytokinesis, resulting into two nuclei in one cell.
How does human life depend on mitosis?
Replacement and regeneration of new cells– Regeneration and replacement of worn-out and damaged tissues is a very important function of mitosis in living organisms. Mitosis helps in the production of identical copies of cells and thus helps in repairing the damaged tissue or replacing the worn-out cells.