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What is the initiating factor responsible for Treacher-Collins syndrome?
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The image below shows anterior boundaries of Hox gene expression in the mouse embryo.
Name the gene expression domain denoted by the arrow.
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The image below shows anterior boundaries of Hox gene expression in the mouse embryo.
Name the gene expression domain denoted by the arrow.
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Opposing gradients of which factors regulate formation of the end of the spinal cord along the anterior-posterior axis?
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If a moderate level of Shh expression was expressed throughout the axis of the spinal cord, what would you expect to happen?
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The image below shows anterior boundaries of Hox gene expression in the mouse embryo.
Name the gene expression domain denoted by the arrow.
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Oscillating expression of which signalling pathway genes plays a role in somite formation from presomitic mesoderm?
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Duck embryos develop webbed feet while chicken embryos do not. Developmentally, what is the likely basis of duck's webbed feet?
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Mutations in the Sox9 gene independently affect both cartilage and testis development. This is a an example of what type of developmental phenomenon?
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The schematic below shows the forelimb bud of a mouse embryo.
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