CELL DIVISION
THE CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chromosomes attach to mitotic spindles and align along the equator of the cell.
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The cell grows and carries out normal cell processes and DNA replicates.
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Chromosomes reach poles of the cell, nuclear envelope, reforms, nucleolus reappears, and chromosomes decondense.
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Microtubules shorten moving chromosomes to opposite poles.
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Nuclear membrane disintegrates, the nucleolus disappears, chromosomes condense, mitotic spindle begins to form between the poles.
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Detailed explanation-1: -During interphase, the cell grows and makes a copy of its DNA. During the mitotic (M) phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.
Detailed explanation-2: -During interphase, the chromosomes are decondensed and distributed throughout the nucleus, so the nucleus appears morphologically uniform. At the molecular level, however, interphase is the time during which both cell growth and DNA replication occur in an orderly manner in preparation for cell division.
Detailed explanation-3: -A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.
Detailed explanation-4: -Continuing to grow and carry out normal functions, eukaryotic cells replicate their chromosomes during the S phase of Interphase. S stands for synthesis (of a new set of chromosomes). These matching sets of chromosomes are known as sister chromatids.
Detailed explanation-5: -In the eukaryotic cell cycle, chromosome duplication occurs during “S phase” (the phase of DNA synthesis) and chromosome segregation occurs during “M phase” (the mitosis phase).