#Question id: 7094
#Unit 5. Developmental Biology
Mutations in homeotic genes can lead to what type of developmental defect?
#Question id: 7095
#Unit 5. Developmental Biology
Which of the following, first discovered through
mutagenesis studies in Drosophila, also function in the development of mammals
like us?
a) hedgehog
b) homeobox genes
c) the Wnt family
d) the Toll signaling pathway
Which of the following combination is correct?
#Question id: 7096
#Unit 5. Developmental Biology
In which portion of the frog's life-cycle would a frog appear most similar to a mammal?
#Question id: 7097
#Unit 5. Developmental Biology
What property of the mammalian embryo permits the production of chimeric mice?
#Question id: 7098
#Unit 5. Developmental Biology
The role of maternal factors (such as Vg-1, Xwnt-1, and VegT) packaged into the vegetal region of the Xenopus oocyte is:
#Question id: 7099
#Unit 5. Developmental Biology
A fate map of a Xenopus blastula, just before gastrulation begins, shows that the top portion of the embryo will become ectoderm (skin and nerve), the central portion will become mesoderm (bone, muscle, and blood), and the lowest portion will become endoderm (gut). How is it that the endoderm and mesoderm, shown on the outside in the fate map, end up on the inside in the embryo after gastrulation?