The Cell Cycle
- Created by: Chloe
- Created on: 01-06-15 08:38
View mindmap
- The Cell Cycle
- Replication of DNA
- Semi Conservative Replication
- 1. Portion of DNA is looked at
- 2. Enzyme DNA helicase causes the two strands to seperate
- 3. DNA completes the splitting of the strand. Meanwhile free nucleotides that come from the nucleus are attracted to the complementary bases
- 4. The bottom three nucleotides that are waiting, lined up are joined to the strands by DNA polymerase
- 5. Once they are all joined up - forming a polynucleotide. Two identical strands of DNA are formed - one side is original and the other is daughter
- 4. The bottom three nucleotides that are waiting, lined up are joined to the strands by DNA polymerase
- 3. DNA completes the splitting of the strand. Meanwhile free nucleotides that come from the nucleus are attracted to the complementary bases
- 2. Enzyme DNA helicase causes the two strands to seperate
- 1. Portion of DNA is looked at
- Semi Conservative Replication
- Mitosis
- 1. Prophase
- in which the chromosomes become visible and the nuclear envelope disappears
- 2. Metaphase
- in which the chromosomes arrange themselves at the equator of the cell
- in which the chromosomes become visible and the nuclear envelope disappears
- in which the chromosomes arrange themselves at the equator of the cell
- 3. Anaphase
- in which each of the two threads of a chromosome migrates to an opposite pole
- in which the chromosomes arrange themselves at the equator of the cell
- in which the chromosomes arrange themselves at the equator of the cell
- in which each of the two threads of a chromosome migrates to an opposite pole
- 4.Telophase
- in which the nuclear envelope reforms
- in which each of the two threads of a chromosome migrates to an opposite pole
- in which each of the two threads of a chromosome migrates to an opposite pole
- in which the nuclear envelope reforms
- 1. Prophase
- Meiosis
- 1st Division
- homologous chromosomes pair up and and their chromatids wrap around each other. By the end of this stage the pairs have separated
- Crossing over - chromatids cross over and the tension causes them to snap and then bind again - changes the alleles
- one chromosome from each pair going into one of the two daughter cells
- homologous chromosomes pair up and and their chromatids wrap around each other. By the end of this stage the pairs have separated
- 2nd Division
- The chromatids move apart at the end of meiosis 2, four cells have now been created
- 1st Division
- Replication of DNA
Comments
No comments have yet been made