Mitosis
Mitosis (Supplement)
- Body cells are diploid (two sets of chromosomes; humans have 23 pairs).
- Mitosis makes two cells that are genetically identical to the parent.
- The chromosomes are copied exactly (replication) first, so each daughter cell keeps the full number.
Practice
Mitosis produces:
Mitosis makes two cells identical to the parent, each keeping the full (diploid) chromosome number.
What mitosis is for
- growth,
- repair of tissues and replacing old cells,
- asexual reproduction.
- Stem cells are unspecialised cells that divide by mitosis; their daughters can then become specialised.
Practice
Mitosis is used for which of these? (Choose all that apply.)
Mitosis is for growth, repair and asexual reproduction; gametes are made by meiosis.
Practice
Stem cells are unspecialised cells that divide by mitosis.
Stem cells divide by mitosis; their daughter cells can then specialise into different cell types.
You've got it
Key idea
- mitosis → two genetically identical diploid cells (chromosomes replicated first)
- used for growth, repair, replacing cells, and asexual reproduction
- stem cells divide by mitosis, then specialise