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Sagot :
Answer:
Interphase
Gap O (GO) - It is also known as the resting phase. This phase in the cell cycle is where the cells exist if they do not receive the go-ahead signal at the G 1 checkpoint. Mot of the human cells in their body are in the G0 phase.
Gap 1 (G1) - This is the restriction point where it ensures that the cell is large enough to divide and have enough nutrients in it to support the resulting daughter cells.
S Phase - It is responsible for the synthesis or replication of DNA.
Gap 2 (G2) - It is where it ensures that the DNA replication in the S phase has been successfully completed without any problem.
Mitosis or M Phase
Prophase The first stage of mitosis and it is the preparatory stage of the cell. In this stage you can still see the nucleus which will disappear later on
Metaphase The second stage and it is the stage where the chromosomes arranged so that their centromeres become aligned in one place at the center
Anaphase It is the third stage of mitosis and where the separation of sister chromatids occurs and move towards the poles. The chromatids are pulled by the spindle fibers.
Telophase The last stage of mitosis where the daughter chromosomes complete their migration to the poles. The two set of progeny chromosomes are assembled into two groups at the opposite ends of the cell. A nuclear membrane then forms around each chromosome group and the spindle microtubules disappear and soon the nucleolus reforms.
Meiosis
Prophase 1 This is where the crossing over and recombination of genetic material between non sister chromatids happened. It has five substages; LEPTONEMA, ZYGONEMA, PACHYNEMA, DIPLONEMA and DIAKINESIS. Each substages has it unique purposes.
Metaphase 1 It is where the alignment of paired chromosomes along the center of a cell, ensuring that two complete copies of chromosomes are present in the resulting two daughter cells of meiosis
Anaphase 1 This stage is characterized by the movement of chromosomes to both poles of cell via a microtubule network known as the spindle fiber
Telophase 1 Is the stage where the chromosomes have finished moving to opposite ends of the cell. This will then be followed by cytokinesis producing two daughter cells
Prophase 2 It is where the dyads (the sister chromatids) contract
Metaphase 2 The stage where the centrosomes are directed to the equatorial plate and the divides
Anaphase 2 It is the stage where the sister chromatids move away from each other and migrate to the opposite poles of the spindle fiber
Telophase 2 The last stage of meiosis, the chromosomes reach opposite poles and the cytokinesis occurs. The final result is that you have now four haploid daughter cells
Cytokinesis
Cytokinesis is the division of the cytoplasm that last for about one to two hours.
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