List the correct order of steps of morphogenesis in Drosophila melanogaster.
What will be an ideal response?
a. Establishment of anterior/posterior axes
b. Gap genes divide the body into broad regions
c. Pair-rule genes are activated in order to develop a preliminary segmentation pattern
d. Homeotic genes determine which body parts arise from each region
You might also like to view...
Explain our present understanding of molecular adaptations to the cytoplasmic membrane that are present in psychrophiles
What will be an ideal response?
Nitrifying Archaea such as Nitrosopumilus maritimus use ________ as a sole carbon source and are capable of obtaining sufficient energy by aerobically oxidizing ________
A) CO2 / NO B) sugars / NH3 C) CO2 / NH3 D) organic acids / NO
The endosymbiotic theory says that precursor eukaryotic cells acquired cilia by endosymbiosis with a(n) ________ ancestor and others gained photosynthetic ability from endosymbiosis with a(n) ________ ancestor.
A. helminth, algal B. spiral, cyanobacterial C. protozoan, algal D. archaeal, cyanobacterial
Which function earlier in development: maternal-effect genes or zygotic genes?
What will be an ideal response?