CELL DIVISION
MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Detailed explanation-1: -o, the correct statement is ‘In both mitosis and meiosis the replication of DNA and chromosomes occurs at the same stage. ‘
Detailed explanation-2: -(i) Mitosis is preceded by one cycle of DNA replication and meiosis is preceded by two cycles of DNA replication.
Detailed explanation-3: -The overall meiotic cell cycle involves a single chromosomal duplication and two successive cell divisions. The first meiotic cell division or meiosis I is reductional, disjunctional and heterotypic division.
Detailed explanation-4: -The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Detailed explanation-5: -In mitosis, chromosome duplication occurs during interphase.