Meiosis: A process of reductional division. When meiosis begins, the DNA in the original cell is replicated. It occurs in all eukaryotes. Meiosis 1: is the same as mitosis. Meiosis 2: Prophase II: We see the disappearance of the nucleoli and the nuclear envelope again as well as the shortening and thickening of the chromatids. Metaphase II: centromeres contain two kinetochores that attach to spindle fibers from the centrosomes (centrioles) at each pole. Anaphase II: where the centromeres are cleaved. Telophase II: uncoiling and lengthening of the chromosomes and the disappearance of the spindle. That is when an organism forms...!
A cell is the smallest living organism and it is often called the building block of life.
Cells divide by mitosis.
Mitosis is a process which results in the production of two daughter cells from a single parent. The daughter cells are identical to one another and to the original parent cell.
Interphase: The cells cromosomes duplicate and the nuclkeus is clearly visible.
Prophase: Each chromosome has duplicated and now consists of two sister chromatics. The nuclear envelope breacks down into vesicles.
Metaphase: The chromosomes align at the equitorial plate and are held in place by microtubles attached to the mitotic spindle and to part of the centromere.