Biology ( Chapter 3 and 4)

Based on my mind:
Cell division is the process the new cell is reproduced from old parent cell.
Cell division is divided into two(a)Mitosis and (b)Meiosis.
(a)Mitosis is a process where the cell division to produce two daughter cell that identical to parent cell.The number of chromosomes is same (2n) with its parent cell.
(b)Meiosis is a process where the nuclear division to produce four daughter that is haploid(n) from its parents that is diploid cell(2n).

Cell cycle is a squence of the stage that the cell is divides from one cell division to the next.
Cell cycle consist of teo phases:
*Interphase
*M phase

Interphase is a phase between a successive mitotic division and appear as a ;resting point'.
Its involve 3 main stages:
(a)G1
(b)S
(c)G2

G1 is the longest phase in the phase.During this stages,the RNA and protein is syntesize.
S is known as a synthesis.During this stage,the synthesis of DNA is happened.
G2 is a stage after a synthesis of DNA.Its known as a prior to the mitosis phase.During this phase,the microtubbules is formed.The number of cell of organelles increases.

M phase involves 4 main stages.Prophase,Metaphase,Anaphase and Telophase.
The significance of mitosis:
(a)Growth:increasing of cell in tissue
(b)Genetic stability:The number of chromosomes of daughter cell cell is same with parent cell.The daughter cell also identical with its parent cell.
(c)Cell replacement:Repaired the damaged cell and tissue.
(d)Asexual reproduction:The daughter cell is identical with its parent
(e)Regeneration:Some animal can regenerate.Such as starfish.

Meosis also has the same stage as a mitosis.But its has two division that is:
(a)Meiosis I
(b)Meiosis II

The significance of meiosis is to contrasting the number of cell.If not,the number of cell in living organism will continously dividing.It can cause an abnormality.
Meiosis also can causes genetic variation,This is happen during meiosis 1(prophase I) where the homologous chromosomes is crossing over between each other.They variation occurs.
Fertilisation(syngamy) also cause variation in the cell.

There is a lot of differences between mitosis and meiosis.First of all,crossing over occurs during meiosis but not in mitosis.Meiosis involve the homologous choromosomes whereas mitosis involve the division between sister chromatids.Meiosis produces 4 haploid daughter cell whereas mitosis produces 2 diploid daughter cell.The meiosis occurs in the formation of gamete(ovary and sperm) while mitosis occurs in somatic cell.Lastly,Meiosis causes variation while mitosis does not.

Actually there is a lot of differences between mitosis and meiosis.But this is only what I remember rite now.

*If there is s mistake,make it rite k..I typing based on my memory.(<3)