968070
Questão 1
Questão
A morphogen:
Responda
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Is not expressed from a localised source in the embryo
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Does not form a concentration gradient
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Is not a signalling molecule
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Specifies cell fates according to its concentration
Questão 2
Questão
Bicoid mRNA is tightly localised to the posterior end of the egg.
Responda
- True
- False
Questão 3
Questão
Which of the following is not an example of induction?
Responda
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Xenopus animal cap assay
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Homologous recombination
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Anchor cell signalling to vulval precursors in the C.elegans embryo
Questão 4
Questão
In mosaic development, isolated cells are able to develop without external signalling.
Responda
- True
- False
Questão 5
Questão
Somites give rise to which of the following...? (Multiple answers)
Responda
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Neural tube
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Skeletal muscle
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Notocord
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Dermis
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Glia
Questão 6
Questão
MyoD is sufficient to direct muscle development when transfected into non-muscle cells
Responda
- True
- False
Questão 7
Questão
Reverse genetics uses the mutant phenotype as a starting point
Responda
- True
- False
Questão 8
Questão
Which of the following are gain of function mutations...?
Responda
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Amorph
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Antimorph
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Neomorph
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Hypomorph
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Hypermorph
Questão 9
Questão
Kit and Steel are in the same gene
Responda
- True
- False
Questão 10
Questão
Which of the following is the ligand-receptor pair Kit and Steel responsible for the normal development of...? (Multiple answers)
Responda
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Melanoblasts
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Keratinocytes
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Germ cells
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Fibrocytes
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Megakaryocytes
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Haematopoietic stem cells
Questão 11
Questão
Which one of the following is the correct Hh pathway sequence?
Responda
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Hh ---| Ptc ---| Smo --> Ci ---> wg
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Hh ---| Smo --> Ptc --> Ci ---| wg
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wg ---> Ci ---> Ptc ---| Smo ---| Hh
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wg ---| Smo ---| Ptc ---> Ci ---> Hh
Questão 12
Questão
Barchyury codes for a transcription factor responsible for the development of which germ layer?
Responda
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Mesoderm
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Ectoderm
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Endoderm
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