CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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chromosome duplication and synapsis
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DNA replication and seperation of chromatids
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tetrad formation and fertilization
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reduction in chromosomes number and format
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Detailed explanation-1: -Answer: Mitosis is a process of cell duplication, in which one cell divides into two genetically identical daughter cells. In the various stages of mitosis, the cell’s chromosomes are copied and then distributed equally between the two new nuclei of the daughter cells.
Detailed explanation-2: -During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. Mitosis itself consists of five active steps, or phases: prophase, prometaphase, metaphase, anaphase, and telophase.
Detailed explanation-3: -Anaphase. The progression of cells from metaphase into anaphase is marked by the abrupt separation of sister chromatids.
Detailed explanation-4: -A central feature of mitosis is segregation of sister chromatids to opposite poles during anaphase.
Detailed explanation-5: -During the S phase, DNA replication begins and creates two identical copies of DNA. During G2 the cell makes its final preparations for cell division and replicates organelles. Then, finally in mitosis, or M phase, the cell divides and each daughter cell receives an identical copy of DNA created during S phase.