Zusammenfassung der Ressource
Mitosis and Miosis
- Cells in mammals are diploid.
- Need to be copied exactly so
new cells can be produced for...
- Growth
- Repair to damaged tissues
- Replacing old worn out cells
- Produces two
identical cells with the
same amount of
chromosomes.
- Produces 2 genetically
identical diploid cells
- Diploid = A cell that contains two sets of
chromosomes.
- Cell division produces Gametes
- A human body cell
contains 46 chromosomes
(23 pairs)
- Human gametes are
haploid, so their nucleus
only contains a single set of
23 unpaired chromosomes
- Produces 4 genetically
different haploid cells
- Haploid = A sex cell (gamete) that contains one
set of chromosomes.
- Gamete is a sex cell
- Chromosomes make identical copies
of themselves. Identical
chromosomes then pair up. Sections
of the DNA get swapped.The pairs of
Chromosomes divide and then the
chromosomes divide.
- Chromosomes in the nucleas are copied and then
chromatids are pulled apart and moved toward the
poles. Chromosomes seperate and the cell divides to
form two identical daughter cells.