L5 Flashcards
drosophila sensory bristles do what
sense air movements when they fly and help them to balance
spaced patterns
happen in development, it is when cells are made proportional to each other - one tissue making at least 2 cell types in proportion to each other
how does the frog NS work?
frogs have 2 - primary controls the movement of the tadpole, and then the secondary controls movement of the frog
how are spaced patterns produced?
lateral inhibition
what is an experiment you can do to prove that the cell that is adopting the primary cell fate is emitting an inhibitory signal?
ablation
there is a finite window where you can ablate a cell and its neighbour will become the cell fate of the one you killed true or false
true
what do sheath cells do?
improves speed of conduction
is a type of glial cell
why is it called lateral inhibition?
because it is in the plane of epithelium
proneural cluster has the potential to become what
group that has potential to become sense organ precursor cells
proneural mutant
too few bristles
mutated the genes needed to make proneural clusters
neurogenic mutant
too many bristles
mutated the gene needed for lateral inhibition
autonomous
required in cell that is receiving the signal
non autonomous
required in a neighbour
this is reminder to go look at the genetic mosaic slide and revise it!!!
woo
notch is the _____
receptor
delta
signal
this is your reminder to go revise notch and delta mutation signal and receptor things
woo
If the achaete scute is removed, what happens?
proneural clusters not made
what are the two classes of mutants that affect trichome development?
Glabra1 and triphychon
____, ____ and ____ form a transcriptional complex that promotes trichome development
Gl1
TTG1
Gl3
___ and ___ form a non-functional complex with GI3 and TTG but are expressed in the same cells as GI1
Try
Cpc
Try and Cpc diffusion is ____ than GI1
quicker
