Show:
Specification
Fertilisation
Cleavage
Fruit flies, Amphibians, Fish
Birds, Mammals
100
1st reversible stage of commitment
What is specification
100
2 ways meiosis in mammalian eggs is unique
What is arrested and unequal division of cytoplasm to give polar bodies
100
holoblastic is _______________cleavage
What is complete
100
in amphibians, what is the site of gastrulation?
What is grey crescent
100
The avian organiser?
What is Hensen's node
200
2nd irreversible stage of commitment
What is determination
200
4 features of sperm
What is flagellum, mitochondria, nucleus, acrosomal vesicle
200
meroblastic is __________________cleavage
What is incomplete
200
Amphibian organiser?
What is dorsal lip of the blastopore
200
Equivalent of fruit fly homeotic genes?
What is Hox genes
300
mosiac embryos, cells receiving instructions individually
What is autonomous
300
2nd stage of egg sperm recognition in mammals
What is sperm binds to zona pellucida
300
type of eggs for fish
What is telolecithal
300
Fish organiser?
What is embryonic shield
300
What happens to the 8 cell stage embryo?
What is compaction
400
regulative, cells interact with each other
What is conditional
400
3rd stage of egg sperm recognition in mammals
What is exocytosis of acrosomal vesicle
400
type of cleavage for mammals
What is rotational
400
Fruit fly genes specifying anterior posterior axis?
What is homeotic selector genes
400
Inner cell mass divides into what two layers?
What is epiblast and hypoblast
500
morphogens in cytoplasm giving instructions
What is syncytial
500
2 blocks to polyspermy?
What is fast and slow
500
type of eggs for amphibians
What is mesolecithal
500
3 reasons to love zebrafish for developmental biology?
What is eggs are transparent, easy to breed, easy to manipulate genetically, similarity to other vertebrates, rapid development
500
Epibast divides into what two layers?
What is embyonic epiblast & amnionic ectoderm