| Stages |
Meiosis |
Mitosis |
| Interphase |
- begins with a diploid cell |
- begins with a diploid cell |
| Prophase |
- four chromosomes combine to form two tetrads
- the chromosomes in the tetrad cross over each other, allowing them to
exchange genetic material |
- four chromatids combine to form two
chromosomes linked by a centromere |
| Metaphase |
- the two tetrads line up in the center |
- the two chromosomes line up in the center |
| Anaphase |
- the two tetrads split up into four chromosomes
which go to both poles |
- the two chromosomes split up into four
chromatids which move to both of the poles |
| Telophase |
- the two sets of chromosomes become enclosed by
the nuclear envelope |
- the two sets of chromatids are enclosed by the
nuclear envelope |
| Cytokenesis |
- two cells are formed with two sets of
chromosomes in each one |
- two cells are created with two chromatids in
each one.
- mitosis is now complete. |
| Prophase II |
- DNA replication is skipped and the two cell's
nuclear envelope are dissolved and the spindle reformed
- the four chromatids in each cell are connected together to form two
chromosomes |
|
| Metaphase II |
- the two chromosomes line up in the center |
|
| Anaphase II |
- the two chromosomes are split up into their
daughter chromatids and moved towards opposites poles |
|
| Telophase II |
- the nuclear envelope is reformed around the
two poles on each cell. |
|
| Cytokenesis |
- the cells are split up again and four haploid cells remain as a
result
- meiosis is now complete |
|
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