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Cellular Differentiation Along Concentration Gradients

Topic

  • Genetics
  • Gene Expression & Regulation
  • Cell Biology
  • Cell Communication
  • Differentiation
  • Anatomy & Physiology
  • Reproduction & Development

Resource Type

  • Videos
  • Animations

Level

High School — AP/IBCollege

Duration

00:02:04
Saved By
15 Users
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Description

This animation shows how varying concentrations of a signaling molecule activate different transcription factors to determine cell fate.

Signaling molecules, such as secreted proteins, can form chemical gradients along an area of the body. As shown in the animation, cells along the gradient are exposed to different concentrations of the signaling molecule. These varying concentrations activate different levels of transcription factors, changing how the cells differentiate. Processes like these play important roles in helping body parts and organs develop, depending on their positions in the body.

This animation is a clip from a 2008 Holiday Lecture Series, Making Your Mind: Molecules, Motion, and Memory. Depending on students’ background, it may be helpful to pause the animation at various points to discuss different steps in the process.

Key Terms

body plan, cell signaling, embryogenesis, morphogen, signaling molecule, transcription factor, Wnt signaling pathway

Terms of Use

Please see the Terms of Use for information on how this resource can be used.

Accessibility Level (WCAG compliance)

Video files meet criteria.

Version History

Date Published 02.04.08

Materials

Large (MOV) 16 MB
Large (WMV) 16 MB
Small (MOV) 6 MB
Small (WMV) 6 MB
Transcript (PDF) 13 KB

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