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the cell makes a copy of its DNA before starting mitosis because, as organisms grow and change, they need new cells to make more skin tissue, bone tissue, muscle tissue. These new cells can only come from one place other cells- through the process of cell division, or mitosis.
- For multicellular organisms (like us) cell division allows an organism to grow and develop from a single cell to trillions of cells, to repair and replace cells worn out and used up by everyday life, and in some cases, to make specialized cells for reproduction.
So each cells have the same DNA but half the organelles that one cell have.
Add: DNA replication results in two identical copies of each chromosome. There needs to be two copies of each chromosome so that at the end of mitosis each daughter cell has the exact same number and types of chromosomes as the original cell. In other words, the daughter cells must have the exact same DNA as the original cell.
Pearline Blick
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∙ 13y agoWiki User
∙ 11y agoDNA replication results in two identical copies of each chromosome. There needs to be two copies of each chromosome so that at the end of mitosis each daughter cell has the exact same number and types of chromosomes as the original cell. In other words, the daughter cells must have the exact same DNA as the original cell so that they have the instructions for carrying out cellular functions properly.
Wiki User
∙ 12y agoSo that the two new cells (one original, one new) in the end will both have equal parts of the nucleus. Without the nucleus, the cell won't be able to function. If there are two nuclei during the process of mitosis, the end result will be two cells, each with ONE nucleus.
Wiki User
∙ 12y agoMitosis results in two genetically identical daughter cells. In order to give both of the daughter cells the same number of chromosomes as the original cell, it must make a copy first. Then it has two full copies of the DNA - and gives one to each daughter cell when division occurs.
Wiki User
∙ 9y agoIt is important that the exact copy of the original DNA to be made before mitosis so the cell can divide into two identical cells. This is important for cell division.
Wiki User
∙ 10y agoAfter cell division, each new cell has to have a full copy of the organism's DNA.
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What do chromosomes do before mitosis?
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.
What must a cell do before a cell divides?
It must make a copy of its deoxyribonucleic acid (DNA).
Why does a cell make a copy of DNA before mitosis occurs?
DNA replication results in two identical copies of each chromosome. There needs to be two copies of each chromosome so that at the end of mitosis each daughter cell has the exact same number and types of chromosomes as the original cell. In other words, the daughter cells must have the exact same DNA as the original cell so that each cell has the instructions for carrying out cellular functions.
Before a cell divides it must first make an exact copy of all of its?
A cell must make an exact copy of its genome before it divides. Genomes are the complete set of chromosomes present in a cell.
If a cell has 12 chromosomes how many chromosomes will each daughter cell have after mitosis?
The desired result of mitosis is the division of a parent cell's genome into two daughter cells, therefore a parent cell must make a copy of each chromosome it posseses before mitosis. So, barring any errors, if a parent cell contains 12 chromosomes at the beginning of mitosis, each of the two daughter cells will contain 12 chromosomes at the end of mitosis.
How does DNA make the copy exactly the same as the original?
Yes. The cells go through mitosis, where the DNA doubles its chromosomes and eventually separate, giving an exact copy as the cell before.
What do chromosomes do before mitosis?
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.
Does mitosis have the same chromosome number as the parent cell?
yes. the chromosomes make an exact copy of themselves to give to the daughter cell. as the cell starts to split, the copy moves into the daughter cell.
What must a cell do before a cell divides?
It must make a copy of its deoxyribonucleic acid (DNA).
Why does a cell make a copy of DNA before mitosis occurs?
DNA replication results in two identical copies of each chromosome. There needs to be two copies of each chromosome so that at the end of mitosis each daughter cell has the exact same number and types of chromosomes as the original cell. In other words, the daughter cells must have the exact same DNA as the original cell so that each cell has the instructions for carrying out cellular functions.
What is the purpose of Mitosis in a living cell?
It is the only way a parent cell can make a copy itself to divide the rest into 2 and give it to to the 2 daughter cells.
Before a cell divides it must first make an exact copy of all of its?
A cell must make an exact copy of its genome before it divides. Genomes are the complete set of chromosomes present in a cell.
If a cell has 12 chromosomes how many chromosomes will each daughter cell have after mitosis?
The desired result of mitosis is the division of a parent cell's genome into two daughter cells, therefore a parent cell must make a copy of each chromosome it posseses before mitosis. So, barring any errors, if a parent cell contains 12 chromosomes at the beginning of mitosis, each of the two daughter cells will contain 12 chromosomes at the end of mitosis.
A process in which cells can copy themselves?
Mitosis for normal cells, meiosis to make gametes (eggs, sperm, pollen)
What must a cell do before it can divide to a new cell?
It must make a copy of its deoxyribonucleic acid (DNA).
What organelles make up mitosis?
The centrioles are important for cell division (mitosis)
What does DNA replication make?
DNA replication produces a copy of the DNA. At the same time the cell in which the DNA is to be found splits into two with a copy of the DNA in each. DNA replication is caused by cell replication during the process of mitosis.
