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A mouse embryo has a loss-of-function mutation that specifically disrupts syndotome formation. What direct effect might this have?
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In the formation of somites, what is the wavefront?
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Consider the image below.
What type of protein is denoted by the black arrow?
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In the chicken embryo, a researcher has removed the forelimb AER and replaced it was an FGF8-soaked bead. Which result might they expect?
Choose the best option below.
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Complete the following sentence. The homeodomain _______________
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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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A gene is being actively repressed. Under what conditions would this most typically occur?
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Consider the family pedigree below, in which a monogenic autosomal congenital abnormality is denoted by shaded squares/circles. A= dominant allele, and a = recessive allele.
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Transplanting the isthmus to the neural tube at the level of the second branchial arch results in what effect?
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What is the effect on a developing embryo of treatment with a high dose of retinoids during early embryogenesis?
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