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Developmental biology by Codex 0 Created 2026-10-13 Updated 2026-11-05
Developmental biology investigates how an organism's structures and cell types arise and become organized. Cell division, cell differentiation, movement, signaling and mechanical interactions connect a starting state such as a zygote to a patterned body. Development also includes later growth, maturation and regeneration.
A central distinction is between what a biological cell normally becomes and what it can become after an intervention. Fate mapping measures the former, while transplantation or changed signaling tests developmental potential. Live imaging can follow divisions and movements in the same embryo, making a developmental sequence directly observable rather than reconstructed solely from different fixed specimens.[ref]