Best answer: Can there mitosis without DNA replication?

Without DNA replication in S phase, mitosis cannot occur. During DNA replication, DNA duplicates and this is a very important step. If DNA duplication does not occur than even in mitosis, there will be a reduction in the number of chromosomes of daughter cells. Thus, mitosis cannot occur without DNA replication.

Does mitosis involve DNA replication?

The first stages of the cell cycle involve cell growth, then replication of DNA . … In mitosis, the chromosome copies separate, the nucleus divides and the cell divides. This produces two cells called daughter cells . Each daughter cell is genetically identical to the parent cell and to one another.

What would happen if mitosis occurred without DNA replication?

The process of cell division is called mitosis. Since the cell is dividing it needs two copies of its DNA – one is kept by the parent cell and the other is passed to the daughter cell. If cells don’t replicate their DNA or don’t do it completely, the daughter cell will end up with no DNA or only part of the DNA.

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Do both mitosis and meiosis require DNA replication?

Yes, DNA replicates in both mitosis and meiosis. In meiosis, the cell undergoes two divisions, i.e. meiosis I and II. Meiosis I is reduction division and meiosis II is similar to mitosis but DNA replicates only once during meiosis, i.e. before meiosis I in S phase.

Do both mitosis and meiosis require replication of both strands of DNA?

DNA Replication

Mitosis and meiosis both involve duplication of a cell’s DNA content. Each strand of DNA, or chromosome, is replicated and remains joined, resulting in two sister chromatids for each chromosome. A common goal of mitosis and meiosis is to split the nucleus and its DNA content between two daughter cells.

Why is it necessary for a cell to replicate its DNA before mitosis?

Cells must replicate their DNA before they can divide. This ensures that each daughter cell gets a copy of the genome, and therefore, successful inheritance of genetic traits. DNA replication is an essential process and the basic mechanism is conserved in all organisms.

Why is DNA replication necessary?

DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!

What would be the end result of mitosis if the DNA did not replicate during interphase?

What would result if chromosomes did not replicate during interphase? If chromosomes did not replicate during interphase, the new cells would have only half the information they need to function properly. … Meiosis produces four haploid cells, and mitosis produces two diploid cells.

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Does meiosis involve DNA replication?

Meiosis is characterized by one round of DNA replication followed by two rounds of cell division, resulting in haploid germ cells. Crossing-over of DNA results in genetic exchange of genes between maternal and paternal DNA.

Which of the following occurs during meiosis but not during mitosis?

Which of the following occurs during meiosis but not during mitosis? Synapsis occurs. The pairing of homologous chromosomes that only occurs during prophase I of meiosis is called synapsis. … It has half the amount of DNA as the cell that began meiosis.