Developmental bio - key terms Flashcards
deutero
second
diplo
two
zoa
life
blast
bud (embryonic/precursor)
noto
back
meta
after
chord
string/rope
uro
tail
cephalo
head
echino
spiny/prickly
induction
cell-cell signalling
results in one cell or group of cells effecting a developmental change in the other
morphogenesis
process by which form is generated
gastrulation
morphogenetic process by which diff layers in embryo reach their final position
neurulation
morphonegeneticc process by which nervous system forms
(especially formation of neural tube)
blastomere
cell in early embryo
fate map
assessment of fat of cell based of lineage labelling
(part of descriptive bio)
specification map
assessment of what cell will form if removed from embryonic environment
(part of experimental bio)
determined
a cell/tissue that will still develop according to its fate, regardless of being transplanted
e.g. dorsal lip of blastopore fated to become notochord even if tranplanted in to the ventral side of the embryo
mosaic development
a result of automomous specification of a cell’s fate,
do not rely on cell-cell communication to achieve their normal fate
(shown when fate map is equivalent to the specification map)
most common mechanism by which this occurs is through the asymmetric inheritance of cytoplasmic determinants.
regulative inheritance
cells will receive signals or instructions from its environment
(shown when fate map not equivalent to specification map)
most common mechanism by which this occurs is through cell-cell communication or induction
organiser
dorsal mesoderm turns ectoderm to become neural and mesoderm to become muscle
