prophase
Sign in to savethumb|upright=1.35|Prophase is the first step of cell division in mitosis. As it occurs after G2 of interphase, DNA has been already replicated when prophase begins. thumb|right|200px|Fluorescence microscope image of two mouse cell nuclei in prophase (scale bar is 5 μm).
Article
20 sectionsContents
- Staining and microscopy
- Mitotic prophase
- Condensation of chromosomes
- Movement of centrosomes
- Formation of the mitotic spindle
- Beginning of nucleoli breakdown
- Meiotic prophase
- Prophase I
- Leptotene
- Zygotene
- Pachytene
- Diplotene
- Diakinesis
- Prophase II
- Prophase I arrest
- Differences in plant and animal cell prophase
- Cell checkpoints
- See also
- References
- External links
thumb|upright=1.35|Prophase is the first step of cell division in mitosis. As it occurs after G2 of interphase, DNA has been already replicated when prophase begins. thumb|right|200px|Fluorescence microscope image of two mouse cell nuclei in prophase (scale bar is 5 μm).
Prophase () is the first stage of cell division in both mitosis and meiosis. Beginning after interphase, DNA has already been replicated when the cell enters prophase. The main occurrences in prophase are the condensation of the chromatin reticulum and the disappearance of the nucleolus.