is the process by which two (2) new daughter cells are generated having the same number of chromosome (diploid) as the parent cell (2n)
mitosis
- cell division of genetic material in the nucleus and for growth and repair
- occurs in somatic/body cells
- produces diploid cell and has a goal to make identical cells
mitosis
Chromosome Anatomy
five main parts of the chromosome
p-arm, q-arm, centromere, telomere, chromatids
Chromosome
holds the sister chromatids together and helps in the condensation of chromosomes
cohesin
Chromosome Anatomy
tips of the chromosome and does not contain DNA that codes for a gene
telomere
How many chromosomes are present in a human body cell?
46 chromosomes or 23 pairs of chromosomes
If the (a)________ are attached in kinetochore, it is called (b) ____________
a. microtobules
b. kinetochore microtubules
Mnemonics
f(p)ormation
middle
away
two
Prophase
Metaphase
Anaphase
Telophase
- duplication of centrosome
- uncondensed chromosome
G2 of Interphase
- chromatin is condensed into a chromosome
- nucleoli disappear and nuclear envelope breaks down
- mitotic spindle begins to form
Prophase
- microtubules from the spindle interact with the condensed chromosomes
- kinetochore is formed at the centromere
Prometaphase
- centromeres lie at the center
- kinetochore microtubules from opposite poles are now attached to the SC
Metaphase
- SC are arranged at the metaphase plate
- centrosomes are now at the opposite poles of the cell
Metaphase
- each chromatid becomes independent chromosomes
- two ends of the cell have identical chromosome
Anaphase
- two new daughter chromosomes begin moving toward opposite ends of the cell as their kinetochore microtubules shorten
- cell elongates
Metaphase
- daughter nuclei begin to form at the two poles
- nuclear envelope arises and nucleoli reappears
- chromosome is less condensed
telophase
Cytokinesis
Animal Cell: (a) ________ furrow
Plants Cell: elongates and the (b) ________ forms future cell wall and cell membrane)
a. cleavage
b. cell plate
