G6: MITOSIS Flashcards
It is the process by which a cell replicates its chromosomes
and then segregates them, producing two identical nuclei in
preparation for cell division
Mitosis
IS THE PERIOD WHEN THE CELL IS IN A NON-DIVIDING STATE.
IT IS THE PHASE IN WHICH THE CELL SPENDS MOST OF ITS
LIFE
INTERPHASE
The cell undergoes
protein synthesis under
this stage.
FIRST GAP PHASE
The chromosomes of
the cells are replicated.
SYNTHESIS PHASE
This involves developing
cytoplasmic organelles
necessary for cell division.
SECOND GAP PHASE
WHAT HAPPENS IN THE PROCESS OF PROPHASE?
1. the chromatin fibers condense into visible chromosomes. 2. Each replicated chromosome appears as two identical sister chromatids with their centromeres connected. 3. The mitotic spindle begins to develop. The centrosomes begin to migrate to opposite cellular poles, propelled by the elongating microtubules between them.
Nuclear envelope dissolves
Chromosomes completely condensed
Microtubules bind to the kinetochore of
the chromosomes
PROMETAPHASE
M stands for Middle
Chromosomes align in the middle of the
cell
Centrosomes move to the opposite poles
METAPHASE
process of anaphase
- The pair of sister chromatids are separated,
2. and move toward the opposite poles of the cell.
process of telophase
Formation of two daughter nuclei at either end Reappearance of nucleoli Reformation of nuclear membranes Chromosomes return to loosely packed chromatin Breaking down of mitotic spindle
It is responsible for the final separation into two cells by
splitting the cytoplasm, which completes after the PMAT
mitosis stages.
- The single cell then pinches in the middle to form two
separate daughter cells each containing a full set of
chromosomes within a nucleus
CYTOKINESIS
Produces identical copies of cells to repair and replace worn
out and damaged tissues.
CELL REPLACEMENT
Plays a significant role in the growth of a living organism by
increasing the number of cells .
GROWTH
Single-celled organisms and certain multicellular organisms
use it to reproduce, especially by fragmentation, budding,
etc.
ASEXUAL
REPRODUCTION
It ensures that each daughter cell contains identical copy of
each chromosome.
MAINTENANCE OF
CHROMOSOME NUMBER