#Question id: 6958
#Unit 5. Developmental Biology
Vg-1 and wnt are used in both frogs and chicks to establish a body axis, although in chicks this is the antero-posterior axis instead of the dorso-ventral axis. What is the region of the chick embryo that is thus analogous to the Nieuwkoop center?
#Question id: 6959
#Unit 5. Developmental Biology
Which of the following is NOT involved in left-right asymmetry of vertebrates?
#Question id: 6960
#Unit 5. Developmental Biology
At the blastocyst stage during mammalian embryonic development, the specification of trophectoderm requires ________; whereas in inner cell mass _________activation is essential.
#Question id: 6962
#Unit 5. Developmental Biology
In which way is the organizer region of the sea urchin similar to that in frogs?
#Question id: 6963
#Unit 5. Developmental Biology
During early sea urchin development, which embryonic cells have similar organizer activity to that of amphibian Spemann organizer?
#Question id: 6964
#Unit 5. Developmental Biology
If embryos are disaggregated with chemicals or proteases, and the individual cells are mixed together in culture, what will happen?