1. Mitosis review Mitosis – the process by which a cell grows and divides
Mitosis is how your body grows and heals itself

2. Chromosomes

3. Chromosomes

4. Chromosomes
Chromosome – in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; a prokaryotic cell, has a single circular molecule of DNA

6. Stages of Mitosis
Prophase – Chromosomes begin to condense. The nuclear membrane dissolves. The centrosomes move to opposite poles, and the spindle forms

7. Stages of Mitosis
Metaphase – The condensed chromosomes line up along the equator. Spindle fibers link the chromatids of each chromosome to opposite poles.

8. Stages of Mitosis
Anaphase – As the spindle fibers shorten, the chromatids are pulled toward opposite poles of the cell

9. Stages of Mitosis
Telophase – a new nuclear envelope forms at each pole. The spindle dissolves, and the chromosomes uncoil. Cytokinesis begins

10. End of Mitosis
Cytokinesis – the cell membrane grows into the center of the cell and divides it into two daughter cells of equal size.
Each daughter cell has half of the parent's cytoplasm and organelles

11. Mitosis – Body cell Meiosis – Sex cell

12. Meiosis
Meiosis is the creation of sex cells used in sexual reproduction
In sexual reproduction, two parents give genetic material to produce offspring that are genetically different from their parents
Meiosis has all the steps Mitosis and then splits again

13. Meiosis
Haploid – describes a cell, nucleus, or organism that has only one set of unpaired chromosomes
Diploid – a cell that contains two haploid sets of chromosomes
Homologous chromosomes – chromosomes that are similar in size, in shape, and in kind of genes that they contain

23. Comparing Mitosis & Meiosis
Mitosis makes new cells that are used during growth, development, repair, and asexual reproduction
Meiosis makes germ cells that enable an organism to reproduce sexually and happens only in reproductive structures

25. Mitosis Meiosis Same Different Different
- Both start with diploid cells (2n) containing 2 pairs of homologous chromosomes
Different
Different

26. - Metaphase the chromosomes line up single file
Mitosis
Meiosis
Same
- Both start with diploid cells (2n) containing 2 pairs of homologous chromosomes
Different
- Metaphase the chromosomes line up single file
Different
- Metaphase 1 the homologous pairs line up

27. Mitosis Meiosis Same Different Different
- Both start with diploid cells (2n) containing 2 pairs of homologous chromosomes
Different
- Metaphase the chromosomes line up single file
- Anaphase the sister chromatids separate
Different
- Metaphase 1 the homologous pairs line up
- Anaphase 1 the pairs are separated

28. Mitosis Meiosis Same Different Different
- Both start with diploid cells (2n) containing 2 pairs of homologous chromosomes
Different
- Metaphase the chromosomes line up single file
- Anaphase the sister chromatids separate
- Final cells are diploid (2n)
Different
- Metaphase 1 the homologous pairs line up
- Anaphase 1 the pairs are separated
- Final cells are haploid (1n)

29. Human chromosomes Humans have 46 chromosomes in regular cells.
These are made of 23 pairs of chromosomes.
How many of your chromosomes are from your father ?
How many of your chromosomes are from your mother ?