- a) Interphase: G1 phase, H phase, G2 phase
- b) M stage
G1- the size of the cellular material increases, synthesize proteins and produce RNA. The DNA synthesis is also enhanced. S i9000 phase- the replication of DNA occurs which produces the two identical daughter cellular material. G2- this can be a gap among mitosis and synthesis of DNA where cells grows and creates proteins. This determines whether the cell may move to mitosis (CELL alive).
The availability of proteins and cellular growth is definitely terminated at this time and the offered energy is employed in the split to produce comparable daughter cellular material (CELL alive).
M stage is the least (CELL alive).
G0 may be the stage where cell leaves the circuit and prevents deviding.
It could be a problem since the stage of development will be affected and division will be stopped (CELL alive).
Brain cells and neurological cells.
The intestinal wall cells split often. This divides usually to provide new surfaces considering that the surfaces are often worn out during digestion.
Mitosis helps in the replication of somatic cells in the body, development and repair.
The homologous chromosomes are the ones that are in pairs and have diploid chromosome quantity (2n) although replicated chromosomes are the ones that have got undergone the DNA duplication and they have got two sibling chromatids.
Human gamete has twenty-three pairs as well as the human somatic cell has 23 pairs.
Anaphase features twice as various chromosomes because the previous levels.
Meiosis I actually
Production of gametes in body.
Interphase I- in this level, the GENETICS has replicated and they are within a chromatin. The nuclear membrane is present and it protects the GENETICS molecules by mutation
Prophase I- right here, the GENETICS molecules reduce and coils forming chromosomes. The nuclear membrane can be not noticeable at this stage plus the spindles ways to the opposite cellular poles
Metaphase I- Below, the homologous pairs of chromosomes fall into line next to one another.
Anaphase I- the homologous chromosome pairs moves to the opposite poles along the spindle fibres.
Telophase I- here, the cell goes through division.
The number of chromosomes is reduced to 50 percent the original amount.
Crossing more than is the genetic recombination and it arises at metaphase I level.
This allows for the shuffling of both father and mother characteristics resulting in the rise of a selection of possible blends.
Independent selection is where the genes that represent different trait pairs are seperated to gametes independently of each other and the person associated with the principle is referred to as Mendel. The Independent Choice of chromosomes happens during prophase.
Innate variation is very important for species to develop the new systems and to modify. Natural assortment is improved by the genetically un-identical features.
Prophase II- the nuclear package breaks down as well as the spindle fibrses start to form.
Metaphase II- the liner up of the paired chromosomes takes place as of this phase.
AnaphaseII- the chromatids break up and go on to the opposite poles along the spindle fibres.
Telophase II- the cellular material in the middle undergoes an additional division bringing on four skin cells each having half of the genetic material found in the original cellular.
When chromosomes in meiosis fail to distinct, it is called aneuploidy as well as the condition is referred to as mutation.