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Vorbereitung
  • Struktur und Funktion der Pflanzen (1. Semester)
  • Genetische Grundlagen der Entwicklung Campbell Biologie (6. Auflage) S. 471ff
  • Differentielle Genexpression Campbell Biologie (6. Auflage) S. 496ff
  • Wachstum und Entwicklung der Blütenpflanzen Campbell Biologie (6. Auflage) 883ff
Nachbereitung
Vertiefung Master

Cell lineage

What we expect you to know

Terminology

You should know, what these terms mean and you should be able to explain them in your own words.

Soma . germ line . stem cells . totipotent . somatic embryogenesis . pattern formation .  systemic polarity . cell polarity . closed patterns . open patterns . stochastic . phyllotaxis . telome theory . auxin canalisation . heterocysts . Turing system . reaction-diffusion system . weak coupling . polarity induction . cell lineage .

05 Development: Exercise

Tsvi_Sachs
The experiment by Tsvi Sachs. Where was the auxin source?

 

1. Tell for the mature pollen tube of Angiosperms, what is germ line and what is soma.

2. How would the phenotype of a cyanobacterial overexpression line for the gene encoding hetN look like?

3. This is a representation of one of Tsvi Sachs' experiments on vascular regeneration. A. Where was the agar block with auxin positioned in this experiment? B. How can one visualise the regenerated vessels?

4. The Gierer-Meinhard / Turing model can explain numerous self organisation events in biology. Can you indicate for the Dictyostelium example, what is the activator and what is the Inhibitor?