அனைத்து செல்கள் முன்பே உள்ள செல்களிலிருந்து எழுகின்றன.

Garland Allen

Garland AllenGarland Allen is a Professor in the Evolutionary and Population Biology Program at Washington University in St. Louis. He authored Thomas Hunt Morgan: The Man & His Science, and several texts, including Matter, Energy and Life and The Study of Biology.