Anthrax Reproduction: Binary Fission and Exponential Growth

Bacillus anthracis replicates exclusively by asexual binary fission:

  1. Vegetative cell elongates.
  2. Transverse septum forms → two identical daughters.
  3. Each re-expands and divides again.

Under optimal conditions (nutrients, 37°C, neutral pH), doubling time ≈ 20–30 min → single cell → millions in hours. Sporulation occurs only when nutrients deplete.

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