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DEV3011 - Experimental developmental biology and disease modelling - S1 2026
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Consider the figure below.
What type of molecule is denoted by the black arrow? Choose the CORRECT answer
The image below shows a gastrulating embryo of the invertebrate, Amphioxus.
What is the name given to the layer of cells denoted by the arrow? Choose the CORRECT answer.
The image below shows an early chicken embryo during cleavage.
Which type of cleavage is depicted? Choose the CORRECT answer
Each student (or student pair) will be given a planarian worm in pond water. Observe the planarian down the dissecting microscope.
Adult planarian anatomyCapture and image your planarian worm. Identify the following features: head, trunk, eye spot, sensory auricle, pharynx, chromatophores. (Up-load a pdf or jpeg file).worm will be available for viewing.
a) What is the fluorescent reporter gene being used in this worm ?b) Where in the worm is this reporter gene active?
c) What is the name of the gene it is reporting?
a) Capture an image of the Dpy-18(ok162) ‘’Dumpy’’ mutant (1 mark). Label TWO features that distinguishes it from the wild type worm (use arrows) (2 marks).
b) Capture an image of the Lon-2(e678) ‘’Long’’ mutant (1 mark). Label ONE feature that distinguishes it from the wild type worm (use arrow) (1 mark).
Note: Label your images in Photoshop or Powerpoint (the latter is easiest) and up-load to Moodle as a single file, as a pdf or jpeg.
The figure below shows two types of viable cells derived from a parent cell after cell division (cell A and cell B). Cell B then expresses transcription factor 1 (in green) but not cell A.
Why might cell B express the transcription factor, but not cell A? Choose the CORRECT answer.