UMKC Bio 409 exam 2 review
(2025/2026) questions well answered
axis formation occurs via - CORRECT ANSWER ✔✔interactions between the two coordinate
systems
plaid like structures
loop maintained: initial activation via - CORRECT ANSWER ✔✔pair rule genes
homeotic gene expression- 2 examples - CORRECT ANSWER ✔✔antennapedia complex
bithorax complex
imaginal disks established in _____, leads to _______ formation - CORRECT ANSWER
✔✔embryo; boundary
garcio-bellido - CORRECT ANSWER ✔✔production of marked clones via x-ray techniques,
allowed mitotic crossover, revealed cell mixing
cells stay put in - CORRECT ANSWER ✔✔parasegments
engrailed is expressed in the - CORRECT ANSWER ✔✔posterior
mutant engrailed in posterior looks like - CORRECT ANSWER ✔✔grouping of mutant cells
together to have the least amount of interactions
, engrailed in the anterior looks like - CORRECT ANSWER ✔✔grouping of cells together to have
the least amount of interactions
parasegments are the ______ of development, built in ______. - CORRECT ANSWER ✔✔unit;
halves
compartment hypothesis - CORRECT ANSWER ✔✔allows neuron connections within and across
the boundary
compartments in wing formation: hedgehog - CORRECT ANSWER ✔✔occurs in a narrow strip of
anterior cells at the boundary
repressed in posterior
compartments in wing formation: DPP - CORRECT ANSWER ✔✔targets spalt and omb ;
expression straddles the AP boundary
compartments in wing formation: leg imaginal disk - CORRECT ANSWER ✔✔localized expression
of TFs early in leg development; correlate with specific structures
expressed in posterior
limb bud formation: migration of... - CORRECT ANSWER ✔✔somites and lateral plate mesoderm
three types of axes - CORRECT ANSWER ✔✔proximal/distal
dorsal/ventral
anterior/posterior
AER - CORRECT ANSWER ✔✔raised ridge on ectoderm, mesenchyme under it induces it
(2025/2026) questions well answered
axis formation occurs via - CORRECT ANSWER ✔✔interactions between the two coordinate
systems
plaid like structures
loop maintained: initial activation via - CORRECT ANSWER ✔✔pair rule genes
homeotic gene expression- 2 examples - CORRECT ANSWER ✔✔antennapedia complex
bithorax complex
imaginal disks established in _____, leads to _______ formation - CORRECT ANSWER
✔✔embryo; boundary
garcio-bellido - CORRECT ANSWER ✔✔production of marked clones via x-ray techniques,
allowed mitotic crossover, revealed cell mixing
cells stay put in - CORRECT ANSWER ✔✔parasegments
engrailed is expressed in the - CORRECT ANSWER ✔✔posterior
mutant engrailed in posterior looks like - CORRECT ANSWER ✔✔grouping of mutant cells
together to have the least amount of interactions
, engrailed in the anterior looks like - CORRECT ANSWER ✔✔grouping of cells together to have
the least amount of interactions
parasegments are the ______ of development, built in ______. - CORRECT ANSWER ✔✔unit;
halves
compartment hypothesis - CORRECT ANSWER ✔✔allows neuron connections within and across
the boundary
compartments in wing formation: hedgehog - CORRECT ANSWER ✔✔occurs in a narrow strip of
anterior cells at the boundary
repressed in posterior
compartments in wing formation: DPP - CORRECT ANSWER ✔✔targets spalt and omb ;
expression straddles the AP boundary
compartments in wing formation: leg imaginal disk - CORRECT ANSWER ✔✔localized expression
of TFs early in leg development; correlate with specific structures
expressed in posterior
limb bud formation: migration of... - CORRECT ANSWER ✔✔somites and lateral plate mesoderm
three types of axes - CORRECT ANSWER ✔✔proximal/distal
dorsal/ventral
anterior/posterior
AER - CORRECT ANSWER ✔✔raised ridge on ectoderm, mesenchyme under it induces it
