Vertabrate induction Flashcards
1
Q
What are the 6 development stages from fertilisation to having a functional NS?
A
- Proliferation
- Pattern formation
- Specification
- Migration
- Determination (commitment)
- Differentiation
2
Q
What causes the cells in your body to differentiate?
A
Gene expression controls this via;
Signals & transcription factors
3
Q
What side is the nervous sytem in vertabrates?
A
On the dorsal side
(Refer to diagram)
4
Q
What side is the NS in invertabrates?
A
Ventral
(Refer to diagram)
5
Q
What is the nearest model for human development?
A
Mice
(Their devleopemnt as embryos is pretty similar to that of humans)
6
Q
What promotes gastrulation to start in chicks?
A
Hensen’s node
7
Q
What promotes gastrulation to happen in frogs (amphibians)?
A
The dorsal lip
8
Q
What are the 3 signals in that cause neural induction?
A
- Follistatin
- Noggin
- Chordin
These are BMP antagonists
