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PART - 1 - Unit III : CH - 10 Cell Cycle and Cell Division — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPART - 1 - Unit III : CH - 10 Cell Cycle and Cell Division2 Marks
Question
Can there be mitosis without DNA replication in 'S' phase?
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Answer

Mitotic cell division cannot take place without DNA replication in S phase. Two important events take place during S phase-one is the synthesis or duplication of DNA and the other is the duplication of the centriole. DNA duplication is important as it maintains the chromosome number in the daughter cells. Mitosis is an equational division. Therefore, the duplication of DNA is an important step. 

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