1. Tardigrade
  2. Question
  3. Biology
  4. Cells in phase of cell cycle are least susceptible to radiation damage

Q. Cells in _____ phase of cell cycle are least susceptible to radiation damage

 3160  193 JIPMERJIPMER 2014Cell Cycle and Cell Division Report Error

Solution:

Cells are least radiation sensitive when in the S phase, then in the G1phase, then in the G2phase and most sensitive in the M phase of the cell cycle. This is described by the ‘law of Bergonié and Tribondeau, formulated in 1906. According to this law, radiosensitivity of a tissue is directly proportional to its reproductive capacity and inversely proportional to its degree of differentiation.