Which of the following aspects of human development could be researched using C. elegans  (worm) as a model?

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Which of the following is a function of microfilaments?

Which body patterning axis is formed after gastrulation?

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In the image below, how would you describe the location of the tail (label C) in comparison to the intestines (label B)?  

Which of the following stages leading to fertilisation provides a natural molecular species block?

Consider that you are a developmental biology researcher working on studying the development of your DEV2011 cell type (the one you have been assigned this Semester). 

1) You have a series of fixed embryonic sections to stain and image for your study - what stain and imaging technique (eg haematoxylin, eosin, immunofluorescence, light, fluorescence microscopy) would be the best to use, and why?  (3 marks)  

2. You are designing a study to model the human development of your DEV2011 cell type in a model organism. In which of the following organisms would you choose to undertake this study, and why? Choose from C. cerevisiae (yeast), C. elegans (worm), D. melanogaster (fruitfly), or G. gallus (chicken). (3 marks)

NOTE: There is a word limit of 100 words total for this answer (ie 100 words for combined answer 1 and 2). You can use dot points and keep your answer concise.  Your answer will still submit even if it is over the word limit.  

At which stage of development does syngamy occur in the human embryo?

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If a cell differentiates into a different type in response to an extracellular signal, what kind of change is most likely to have occurred in the cell?

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What tissues develop as the cells of the inner cell mass delaminate to form the bilaminar embryo?

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In the image below, how would you describe the location of the spinal cord (near label E) in comparison to the brain (label F)?