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6. The French Flag Model is commonly used to understand what?
- Morphogen signalling
- Cell fates
- Cell-cell signalling
- Limb development
7. What is not a step in muscle development?
- Expression of myoblastic protein
- Arrangement of proteins into fibres
- Upregulation of MyoD
- Formation of a syncytial cell
8. Where are somites found?
- Notochord
- Neural crest
- Haltares
- Imaginal discs
9. Which is not a muscle-specific protein?
- Phosphate kinase
- Tropomyosin
- Keratin
- Creatine
10. What is not true about Bicoid?
- It activates Hunchback gene
- It is responsible for development of head structures
- Bicoid mutants show no posterior structures
- It is a transcription factor
11. Which statement is correct?
- Only intrinsic factors affect development
- Most cells develop autonomously
- Most development is regulative
- Most cells have their fate determined early
12. What is the correct order of zygotic gene activation?
- Segmentatio genes - selector genes - pair rule genes - gap genes
- Pair rule genes - selector genes - segmentation genes - gap genes
- Gap genes - pair rule genes - segmentation genes - selector genes
- selector genes - gap genes - pair rule genes - segmentation genes
13. What is a morphogen?
- A chemical produced throughout a cell
- A chemical which forms a concentration gradient
- A molecule which is sensed by cell-surface receptors
- A chemical which causes mutations
14. Which statement is correct?
- One transcription factor can activate and/or repress more than one gene
- Most genes are initially active
- The transcription initiation complex forms when DNA polymerase binds to a promotor region
- Transcription can only be regulated by intrinsic factors
15. Which is not true about MyoD?
- Part of the helix-loop-helix family
- Maintains a positive feedback loop
- Expressed in all cells
- Is not involved in muscle contraction
16. Which is not a part of the somite?
- Myotome
- Sclerotome
- Mesotome
- Dermatome
17. What is the name for cells that are determined early and develop on their own?
- Mosaic
- Intrinsic
- Regulative
- Autonomous
18. What transcription factor controls muscle development?
19. What happens to animal cells when an animal cap is transplanted onto vegetal cells?
- Develop into muscle
- Die
- Develop into epidermis
- Develop into neural cells
20. What is not an example of post-transcriptional gene regulation?
- Transcription factors
- RNA splicing
- Nuclear export of RNA
- RNA stability