CELL DIVISION
CELL DIVISION AND CANCEROUS CELLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cell componentssuch as mitochondrion andendoplasmic reticulum areproduced at this stage
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the chromosome is in theform of chromatin
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DNA synthesis occurs grow .
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Detailed explanation-1: -Prophase is the first phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses.
Detailed explanation-2: -During S phase of the eukaryotic cell division cycle, newly replicated DNA is rapidly assembled into chromatin.
Detailed explanation-3: -The DNA is packaged by special proteins called histones to form chromatin. The chromatin further condenses to form chromosomes. This means chromatin is a lower order of DNA organization, whereas chromosomes are a higher order of DNA organization.
Detailed explanation-4: -The first level of packing is achieved by the winding of DNA around a protein core to produce a “bead-like” structure called a nucleosome. This gives a packing ratio of about 6. This structure is invariant in both the euchromatin and heterochromatin of all chromosomes.