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Because the daughter cells have to have the same number of chromosomes you began with.
When the cells go through mitosis the get split. If you split a cell with 46 chromosomes into two, you would only have 23 each.
That's why it needs to replicate beforehand. It will make sure the cells always have 46 chromosomes.
What else can I help you with?
Do chromosomes duplicate during metaphase in the cell cycle?
Chromosomes do not duplicate during metaphase in the cell cycle. Chromosome duplication occurs during the S phase of interphase, before the cell enters mitosis. During metaphase, the duplicated chromosomes align at the center of the cell before separating into two daughter cells during anaphase.
How many rounds of chromosome replication occur in the cell?
One round of chromosome replication occurs in the cell during the S phase of the cell cycle. This results in each chromosome being duplicated, producing two identical DNA molecules called sister chromatids that are connected at the centromere.
During what part of the mitosis process dose the DNA replicate?
DNA replicates during the S phase of interphase, which occurs before mitosis. In the S phase, each chromosome is replicated to form two identical sister chromatids connected at the centromere.
If the chromosome number of a typical onion root tip cell is sixteen before mitosis what is the chromosome number of the each newly formed nucleus after nuclear division has taken place?
the same as before, each will have sixteen. If it was meyoses it would be 1/2 that (8) Mitotic division creates exact replicates of the original, so the answer is 16. Meosis occurs in the flower of the onion, it's sex cells ovules and pollen will have only 8 chromosomes
Which process occurs first in the cell cycle: mitosis or meiosis?
Mitosis occurs first in the cell cycle before meiosis.
When do chromosome duplicate themselves during mitosis?
Chromosomes duplicate during the S phase of interphase, which occurs before mitosis. Each chromosome replicates to form two identical sister chromatids that are held together at the centromere. These sister chromatids are then separated and pulled to opposite poles of the cell during mitosis.
Do chromosomes duplicate during metaphase in the cell cycle?
Chromosomes do not duplicate during metaphase in the cell cycle. Chromosome duplication occurs during the S phase of interphase, before the cell enters mitosis. During metaphase, the duplicated chromosomes align at the center of the cell before separating into two daughter cells during anaphase.
How many rounds of chromosome replication occur in the cell?
One round of chromosome replication occurs in the cell during the S phase of the cell cycle. This results in each chromosome being duplicated, producing two identical DNA molecules called sister chromatids that are connected at the centromere.
Does mitosis ensure that each new eukaryote cell receives a copy of each chromosome?
Yes, it does! This occurs during G2 phase of Mitosis.
During what part of the mitosis process dose the DNA replicate?
DNA replicates during the S phase of interphase, which occurs before mitosis. In the S phase, each chromosome is replicated to form two identical sister chromatids connected at the centromere.
During what part of the mitosis process does the DAN replicate?
DNA replication occurs during the S phase of interphase, which is the phase that precedes mitosis. In this phase, the DNA molecules in the cell's nucleus are duplicated, resulting in two identical copies of each chromosome.
Does DNA occur before or after mitosis?
It occurs before mitosis, in the S-phase (synthesis) of interphase.
If the chromosome number of a typical onion root tip cell is sixteen before mitosis what is the chromosome number of the each newly formed nucleus after nuclear division has taken place?
the same as before, each will have sixteen. If it was meyoses it would be 1/2 that (8) Mitotic division creates exact replicates of the original, so the answer is 16. Meosis occurs in the flower of the onion, it's sex cells ovules and pollen will have only 8 chromosomes
Which process occurs first in the cell cycle: mitosis or meiosis?
Mitosis occurs first in the cell cycle before meiosis.
Which phase occurs before mitosis or meiosis?
The interphase occurs before both mitosis and meiosis. During interphase, the cell grows, carries out normal metabolic activities, and duplicates its DNA in preparation for cell division.
During cell life when do chromosomes duplicate?
Chromosomes duplicate during the S phase of the cell cycle, which occurs after DNA is replicated and before cell division (mitosis or meiosis). This ensures that each daughter cell receives a complete set of chromosomes with identical genetic material.
What is the DNA of mitosis?
There is no DNA of mitosis. Before mitosis, the DNA must be replicated, which occurs during interphase of the cell cycle.
