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Just before cell division begins,the amount of DNA doubles and so do the chromosomes.Each doubled chromosome consists of two copies of the original chromosome joined at the center
Jayde Bins
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∙ 12y agoBecause they have two sets of chromosomes.
Wiki User
∙ 6y agoJust before cell division begins,the amount of DNA doubles and so do the chromosomes.Each doubled chromosome consists of two copies of the original chromosome joined at the center
Wiki User
∙ 13y agoAmount of DNA that has been doubled
Wiki User
∙ 13y agoo a new cell can be made
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Why are chromosome copied before mitosis?
After Mitosis, the result is 2 new, identical, daughter cells. In order for each to be identical, the chromosomes must be copied.
Why must a cell copy its chromosomes before it can go through mitosis?
When a cell copies its DNA, each chromosome must be copied.
What event must occur outside the nucleus before mitosis can begin?
Before mitosis can happen, the chromosomes inside the nucleus must separate to form identical pairs. This sets the stage for each of the daughter cells to have a copy of the DNA to replicate the full sequence.
What must occur before mitosis takes place?
The chromosomes must be duplicated. the real answer: DNA replicates and forms tetrads
What is the phase of mitosis when chromosomes become visibly shortened and thickened?
Prophase
Why must chromosomes be duplicated before mitosis?
Chromosomes have to be duplicated so that the same amount of DNA will be transferred into the new cells formed by mitosis. The new cells will be mutated if they do not duplicate.
What must happened before mitosis can begin?
The chromosomes must be duplicated. the real answer: DNA replicates and forms tetrads
Why must S phase come before mitosis?
Two sets of chromosomes must be available before mitosis so that each of the two daughter cells will have an entire set of chromosomes
Why must a cell chromosome duplicate before mitosis occurs?
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 must happen before meiosis or mitosis can take place?
Before Meiosis 2, the cell must first go through Meiosis 1. This is when the cell splits into two cells, each with two chromosomes.
Why are chromosome copied before mitosis?
After Mitosis, the result is 2 new, identical, daughter cells. In order for each to be identical, the chromosomes must be copied.
Why must a cell copy its chromosomes before it can go through mitosis?
When a cell copies its DNA, each chromosome must be copied.
What event must occur outside the nucleus before mitosis can begin?
Before mitosis can happen, the chromosomes inside the nucleus must separate to form identical pairs. This sets the stage for each of the daughter cells to have a copy of the DNA to replicate the full sequence.
Does DNA replication occur after telophase 1?
Telophase is a phase of mitosis. DNA replication must occur before mitosis begins. If it does not then the DNA chromosomes may not be consistent throughout the division of the cells.
How many chromosomes are in cells formed during mitosis?
A cell undergoing mitosis has twice the usual number of chromosomes for that species. For example, human body cells have 46 chromosomes, but after DNA replication, which must occur before mitosis, a human body cell will have 92 chromosomes.
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.
What must occur before mitosis takes place?
The chromosomes must be duplicated. the real answer: DNA replicates and forms tetrads
