Otherwise only one cell would have the necessary genetic material to function, and the other cell would have nothing and would serve no purpose. Either that or each cell would get half of the necessary DNA which would leave two completely useless cells.
If not copied correctly the daughter cells will not function the same as the original cell did, at the worst case they may not function at all.
However some variation in chromosomes MUST sometimes happen to give the selection processes that permit evolution to find and make improvements in the functioning of cells. So if exact copies were consistently infallibly made, evolution would stop.
Before mitosis begins, the chromosomes in a cell replicate. This occurs during the S (synthesis) phase. Chromosomes need to replicate so that when the cell divides at the end of mitosis, the daughter cells each recieve a copy of the chromosomes.
It is important that chromosomes move during mitosis because the chromosomes' sister chromatids need to separate. They must separate to become daughter cell-carrying chromosomes themselves.
A cell must make an exact copy of its genome before it divides. Genomes are the complete set of chromosomes present in a cell.
In the beginning of mitosis the number of chromosomes double. But since during mitosis the chromosomes are divided between the two daughter cells the number of chromosomes at the end is the same number as the beginning before doubling.
Chromosomes doubles during the S phase of inter-phase, which occurs before Mitosis. During the process of mitoses cell divides into 2 daughter cells from a single parent hence, before mitoses cells must duplicate so that each new cell has a sufficient set of genetic material.
Before mitosis begins, the chromosomes in a cell replicate. This occurs during the S (synthesis) phase. Chromosomes need to replicate so that when the cell divides at the end of mitosis, the daughter cells each recieve a copy of the chromosomes.
After mitosis each daughter cell contains 46 chromosomes as the DNA replicates itself before the cell divides
It is important that chromosomes move during mitosis because the chromosomes' sister chromatids need to separate. They must separate to become daughter cell-carrying chromosomes themselves.
The chromosomes have to split and go to opposite sides of the cell.
So that the new cells have the same chromosomes as the parent cells.
A cell must make an exact copy of its genome before it divides. Genomes are the complete set of chromosomes present in a cell.
When meiosis begins at Gap 1 phase (G1) the cell of a human has 46 chromosomes or 2n.
plasma membrane; :)
In the beginning of mitosis the number of chromosomes double. But since during mitosis the chromosomes are divided between the two daughter cells the number of chromosomes at the end is the same number as the beginning before doubling.
Chromosomes doubles during the S phase of inter-phase, which occurs before Mitosis. During the process of mitoses cell divides into 2 daughter cells from a single parent hence, before mitoses cells must duplicate so that each new cell has a sufficient set of genetic material.
AnswerThe chromosomes replicates themselves before splitting into two daughter cells.
If a cell divides by mitosis both cells will have the diploid (2N) number of chromosomes. These two cells will have identical DNA If a cell divides by meiosis subsequent cells will have the haploid (1N) number of chromosomes. These cells will have the same basic amount of DNA but the DNA will not be identical. If the sex chromosomes are different sizes (like the X and Y chromosomes of humans) the DNA will vary a bit more dramatically if the meiosis includes the additional variation of the different sex chromosomes.