Spatial and Temporal Colinearity - Hox Genes
Hox genes display spatial colinearity: genes at one end of the chromosome are expressed at the head end of an embryo while genes at the other end are expressed toward the tail end. Vertebrate Hox genes also show temporal colinearity: genes at the head end are expressed before those at the tail end.
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Spatial Temporal Colinearity Hox
Added: April 6, 2007, 4:10 pm
Runtime: 36.10 | Views: 11721 |
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Hedgehog Gradient
The level of Hedgehog protein a cell binds during development can influence its fate.
Video REff: http://www.learner.org
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Hedgehog
Added: April 6, 2007, 4:15 pm
Runtime: 26.36 | Views: 4796 |
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Hedgehog Signaling
The Hedgehog signaling pathway triggers expression of other developmentally important genes.
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Hedgehog
Added: April 6, 2007, 4:16 pm
Runtime: 22.22 | Views: 7466 |
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Cyclopamine
The normal Hedgehog signaling pathway is blocked by the receptor antagonist cyclopamine. Video REff: http://www.learner.org
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Cyclopamine
Added: April 6, 2007, 4:33 pm
Runtime: 20.65 | Views: 5283 |
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Homeodomain
A 3-D model of a protein with a homeodomain, a �helix-turn-helix� motif that acts as a transcription factor by binding directly to DNA to turn on other genes.
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Homeodomain
Added: April 6, 2007, 4:36 pm
Runtime: 26.66 | Views: 5450 |
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