#Question id: 6958
#XL - T Zoology
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
#XL - T Zoology
Which of the following is NOT involved in left-right asymmetry of vertebrates?
#Question id: 6960
#XL - T Zoology
At the blastocyst stage during mammalian embryonic development, the specification of trophectoderm requires ________; whereas in inner cell mass _________activation is essential.
#Question id: 6961
#XL - T Zoology
Do HOX genes play a role in the development of C. elegans?
#Question id: 6962
#XL - T Zoology
In which way is the organizer region of the sea urchin similar to that in frogs?
#Question id: 6964
#XL - T Zoology
If embryos are disaggregated with chemicals or proteases, and the individual cells are mixed together in culture, what will happen?