Event/process | System | Period | Frequency (Hz) | Reference |
---|---|---|---|---|
Mitosis | Bacteria | 20 min | 8.3 × 10−4 | [99] |
Human skin | 20–24 h | 1.2 × 10−5 | ||
Fly embryo | 8 min | 21 × 10−3 | ||
Yeast | 2 h | 1.4 × 10−3 | ||
Human nerves | Never | 0 | ||
Human liver cells | 1 year or more | 3.2 × 10−8 | ||
Meiosis | Human sperm cells | About 64 days | 1.8 × 10−7 | |
Human egg cells | 40 year or more | 8 × 10−10 | ||
Oogenesis | Menstruation | 24 days | 4.8 × 10−7 | [100] |