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What is Positional information in Biology? PDF | Download eBooks

Learn Positional information definition in biology with explanation to study “What is Positional information”. Study positional information explanation with biology terms to review biology course for online degree programs.

Positional information Definition

  • Positional information are the molecular cues that control pattern formation, tells a cell its location relative to the body's axes and to other cells.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson

Positional information Explanation

A widely used mechanism for pattern formation in many animals, is based on positional information. Cells acquire positional identities in a carefully coordinated way and then interpret this information according to their genetic constitution and also developmental history. In many animals such as fruit fly, there is a cascade of gene activity which leads both to the development of periodic structures, the segments, and to their acquiring a unique identity.

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