Cell Division
- Created by: AzrahAnsar
- Created on: 20-06-17 15:45
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- Cell Division
- the nucleus of a cell contains chromosomes made of DNA molecules, each of which carries a large numbers of genes.
- In body cells, the chromosomes are normally found in pairs.
- Human body cells contain 23 pairs.
- In body cells, the chromosomes are normally found in pairs.
- an analogy to help understand the structure:
- Book is like the chromosomes
- page is like the genes
- paper is like the material that makes up the gene and the chromosomes
- page is like the genes
- Book is like the chromosomes
- in the cell cycle , sub cellular structures duplicate
- the chromosomes duplicate
- cells increase in size
- chromosomes move and cell divides
- cycle repeats
- chromosomes move and cell divides
- cells increase in size
- the chromosomes duplicate
- DNA must occur before cell division so that when the chromosomes split in two, each new cell has the same amount of DNA as the original cell
- this means that the daughter cells are genetically identical to the parent cell
- the nucleus of a cell contains chromosomes made of DNA molecules, each of which carries a large numbers of genes.
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